msm: cache_erp: Do not panic on TLB multi-hits

TLB multi-hit events may be reported as a result of a
benign condition, so there is no need to panic the kernel
if such a condition is encountered. A TLBIALL operation
needs to be performed to avoid an interrupt storm if the
condition persists.

Change-Id: I91219c299e0915b3e9e0b9d7a672b401e1479d71
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>