omap: DMA: clear interrupt status correctly
omap: DMA: clear interrupt status correctly

When clearing the DMA channel, clear all status bits.

When handling a DMA interrupt, clear only the interrupt
status bits that have been read and are passed to the
channel's interrupt handler, not every status bit.

Signed-off-by: Adrian Hunter <41bb5944f244750b7cf0394140496972a3f1bee3@nokia.com>
Acked-by: Santosh Shilimkar <5b4d8dc9ea337fff5fd1729321eda9873ade0b09@ti.com>
Acked-by: G, Manjunath Kondaiah <39593a4380976a0e45ad88d4a62d9472d9c9ccbc@ti.com>
Signed-off-by: Tony Lindgren <1001e8702733cced254345e193c88aaa47a4f5de@atomide.com>

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