msm: sps: read pipe number from the exact reg field
msm: sps: read pipe number from the exact reg field

The reserved fields in regular BAMs have new meanings in NDP-BAM
and BAM-Lite on B family. Read the exact reg field for pipe number
instead of reading the whole register.

Change-Id: I25dca6ed3c8beab3c2e943120867c759dd5e4095
Signed-off-by: Yan He <284060d4fa88d6c819bf8cee4a90527ebd461f86@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas