msm: msm8974: Disable panics on recoverable L2 parity errors

Single-bit L2 parity errors are recoverable, so it is not
necessary to panic on them. Disable the panics so that any
users encountering them do not crash unnecessarily.

Change-Id: I2ed1803c4877317c0337e8eda3c55dc1efcb5dc8
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>