msm: sps: remove the address checking for descriptors
msm: sps: remove the address checking for descriptors

0x0 is a valid physical address for drivers to use. Thus, remove
the checking of physical address for descriptors.

Change-Id: I19b8e215a4538ec0a9b7def505f9577e204c7730
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