drivers/uio/uio_pruss.c: use gen_pool_dma_alloc() to allocate sram memory
drivers/uio/uio_pruss.c: use gen_pool_dma_alloc() to allocate sram memory

Since gen_pool_dma_alloc() is introduced, we implement it to simplify code.

Signed-off-by: Nicolin Chen <64e6faff7c8152281cc4153661679740a5d495cc@freescale.com>
Cc: "Hans J. Koch" <4622a3e4640ee19ab4ebad197849e45b7170d50c@hansjkoch.de>
Cc: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs