[ARM] pxa: remove the now unused IMPMCR/IMPMSR register definitions
[ARM] pxa: remove the now unused IMPMCR/IMPMSR register definitions

There two are internal registers that are used to control the power
management of the Internal Memory (i.e. Internal SRAM). They are
referenced nowhere and removed here to simplify pxa-regs.h a bit.

Signed-off-by: Eric Miao <e9e0335ae43eee51396737d09983d9b25d00e51e@marvell.com>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs