Older compilers don't recognize v7 wfi instruction, so use wfi macro to fix builds on old compilers. Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Older compilers don't recognize v7 wfi instruction, so use wfi macro to fix builds on old compilers. Signed-off-by: Rob Herring <rob.herring@calxeda.com>