autoboot: remove CONFIG_ZERO_BOOTDELAY_CHECK

As the help message of CONFIG_BOOTDELAY says, CONFIG_BOOTDELAY=-2
means the autoboot with no delay, with no abort check even if
CONFIG_ZERO_BOOTDELAY_CHECK is defined.

To sum up, the autoboot behaves as follows:

 [1] CONFIG_BOOTDELAY=0 && CONFIG_ZERO_BOOTDELAY_CHECK=y
    autoboot with no delay, but you can abort it by key input

 [2] CONFIG_BOOTDELAY=0 && CONFIG_ZERO_BOOTDELAY_CHECK=n
    autoboot with no delay, with no check for abort

 [3] CONFIG_BOOTDELAY=-1
    disable autoboot

 [4] CONFIG_BOOTDELAY=-2
    autoboot with no delay, with no check for abort

As you notice, [2] and [4] come to the same result, which means we
do not need CONFIG_ZERO_BOOTDELAY_CHECK.  We can control all the
cases only by CONFIG_BOOTDELAY, like this:

 [1] CONFIG_BOOTDELAY=0
    autoboot with no delay, but you can abort it by key input

 [2] CONFIG_BOOTDELAY=-1
    disable autoboot

 [3] CONFIG_BOOTDELAY=-2
    autoboot with no delay, with no check for abort

This commit converts the logic as follow:
  CONFIG_BOOTDELAY=0 && CONFIG_ZERO_BOOTDELAY_CHECK=n
    --> CONFIG_BOOTDELAY=-2

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Christian Riesch <christian.riesch@omicronenergy.com>
Acked-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>

configs/brppt1_mmc_defconfig

@@ -3,7 +3,7 @@ CONFIG_TARGET_BRPPT1=y
 CONFIG_SPL=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,EMMC_BOOT"
-CONFIG_BOOTDELAY=0
+CONFIG_BOOTDELAY=-2
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMI is not set

configs/brppt1_nand_defconfig

@@ -3,7 +3,7 @@ CONFIG_TARGET_BRPPT1=y
 CONFIG_SPL=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,NAND"
-CONFIG_BOOTDELAY=0
+CONFIG_BOOTDELAY=-2
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMI is not set

configs/brppt1_spi_defconfig

@@ -4,7 +4,7 @@ CONFIG_SPL=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,SPI_BOOT,EMMC_BOOT"
 CONFIG_SPI_BOOT=y
-CONFIG_BOOTDELAY=0
+CONFIG_BOOTDELAY=-2
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMI is not set

configs/brxre1_defconfig

@@ -2,7 +2,7 @@ CONFIG_ARM=y
 CONFIG_TARGET_BRXRE1=y
 CONFIG_SPL=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1"
-CONFIG_BOOTDELAY=0
+CONFIG_BOOTDELAY=-2
 CONFIG_HUSH_PARSER=y
 # CONFIG_CMD_BOOTD is not set
 # CONFIG_CMD_BOOTM is not set

configs/cairo_defconfig

@@ -2,7 +2,7 @@ CONFIG_ARM=y
 CONFIG_OMAP34XX=y
 CONFIG_TARGET_OMAP3_CAIRO=y
 CONFIG_SPL=y
-CONFIG_BOOTDELAY=0
+CONFIG_BOOTDELAY=-2
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Cairo # "
 CONFIG_CMD_BOOTZ=y

configs/controlcenterd_TRAILBLAZER_DEVELOP_defconfig

@@ -2,7 +2,7 @@ CONFIG_PPC=y
 CONFIG_MPC85xx=y
 CONFIG_TARGET_CONTROLCENTERD=y
 CONFIG_SYS_EXTRA_OPTIONS="TRAILBLAZER,SPIFLASH,DEVELOP"
-CONFIG_BOOTDELAY=0
+CONFIG_BOOTDELAY=-2
 # CONFIG_CMD_BOOTM is not set
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set

configs/controlcenterd_TRAILBLAZER_defconfig

@@ -2,7 +2,7 @@ CONFIG_PPC=y
 CONFIG_MPC85xx=y
 CONFIG_TARGET_CONTROLCENTERD=y
 CONFIG_SYS_EXTRA_OPTIONS="TRAILBLAZER,SPIFLASH"
-CONFIG_BOOTDELAY=0
+CONFIG_BOOTDELAY=-2
 # CONFIG_CMD_BOOTM is not set
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set

configs/omap3_evm_quick_mmc_defconfig

@@ -2,7 +2,7 @@ CONFIG_ARM=y
 CONFIG_OMAP34XX=y
 CONFIG_TARGET_OMAP3_EVM_QUICK_MMC=y
 CONFIG_SPL=y
-CONFIG_BOOTDELAY=0
+CONFIG_BOOTDELAY=-2
 CONFIG_SYS_PROMPT="OMAP3_EVM # "
 # CONFIG_CMD_BDI is not set
 # CONFIG_CMD_CONSOLE is not set

configs/omap3_evm_quick_nand_defconfig

@@ -2,7 +2,7 @@ CONFIG_ARM=y
 CONFIG_OMAP34XX=y
 CONFIG_TARGET_OMAP3_EVM_QUICK_NAND=y
 CONFIG_SPL=y
-CONFIG_BOOTDELAY=0
+CONFIG_BOOTDELAY=-2
 CONFIG_SYS_PROMPT="OMAP3_EVM # "
 # CONFIG_CMD_BDI is not set
 # CONFIG_CMD_CONSOLE is not set