ARM: OMAP: Proper handling of DMA4_IRQSTATUS_L0
ARM: OMAP: Proper handling of DMA4_IRQSTATUS_L0

The register bits are reset by writing one. Remove the unneeded reads and
fix writes to not clear too many bits.

Signed-off-by: Timo Teras <266f729f1f620250264df63d5dfd302c2a88080e@solidboot.com>
Signed-off-by: Juha Yrjola <d251aed87c0d6f66517643c8135dd2ed7269b44a@solidboot.com>
Signed-off-by: Tony Lindgren <1001e8702733cced254345e193c88aaa47a4f5de@atomide.com>

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