msm: vmem: Don't check for reset state of VMEM banks

On 8996 V3, the reset value of registers indicating VMEM
bank state has changed. To avoid dependency on HW versions
remove this check.

Change-Id: Ie56cb431959ccb2daf6ad15048b182998636d0b8
Signed-off-by: Sowmya Pandiri <spandiri@codeaurora.org>