Add support for TQM-specific chip select logic to FSL-UPM

For the NAND chips on the TQM8548 modules, a special chip-select logic is
used. It uses dedicated address lines to be set via UPM machine address
register (mar). This patch adds such support to the FSL-UPM driver.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

include/linux/mtd/fsl_upm.h

@@ -28,6 +28,7 @@ struct fsl_upm_nand {
 	int width;
 	int upm_cmd_offset;
 	int upm_addr_offset;
+	int upm_mar_chip_offset;
 	int wait_pattern;
 	int (*dev_ready)(int chip_nr);
 	int chip_delay;