msm: camera: Cleanup msm generic buf queue on userspace crash

Clean-up the msm camera generic buff queue on userspace
crash to avoid invalid memory access in next session
which might lead to corruption in other modules
and system stability issues and also avoid memory leak.

Change-Id: Icd989cf9ef944c01e1193fead105963f745bcbc4
CRs-Fixed: 522939
Signed-off-by: Hariram Purushothaman <hpurus@codeaurora.org>