msm: vidc: Selectively handle SYS_ERROR as FATAL

User SSR triggers a SYS_ERROR from the hardware.
However the driver cannot detect if the error is
due to user SSR or other reasons. Handle SYS_ERROR
due to user SSR as non-fatal

CRs-Fixed: 1054921
Change-Id: I4151b6bfb24e55c1f1a38bfdca012f7b7af86603
Signed-off-by: Umesh Pandey <umeshp@codeaurora.org>