soc: swr-mstr: Enable required soundwire master interrupts

Enable soundwire master interrupts by setting the interrupt
enable bits in new CPU_n interrupt register.

Change-Id: Iec2502129cd04da2c8cbc3d3f43278a2ed3ba7d6
Signed-off-by: Ramprasad Katkam <katkam@codeaurora.org>