drm/imagination: Add missing rogue context reset reasons

drm/imagination: Add missing rogue context reset reasons

Update the context reset reason enum with the missing reset reasons in
the 6-11 value gap:
 - CDM Mission/safety checksum mismatch;
 - TRP checksum mismatch;
 - GPU ECC error (corrected, OK);
 - GPU ECC error (uncorrected, HWR);
 - FW ECC error (corrected, OK);
 - FW ECC error (uncorrected, ERR);

Co-developed-by: Sarah Walker <sarah.walker@imgtec.com>
Signed-off-by: Sarah Walker <sarah.walker@imgtec.com>
Signed-off-by: Alexandru Dadu <alexandru.dadu@imgtec.com>
Reviewed-by: Matt Coster <matt.coster@imgtec.com>
Link: https://patch.msgid.link/20260323-b4-firmware-context-reset-notification-handling-v3-1-1a66049a9a65@imgtec.com
Signed-off-by: Matt Coster <matt.coster@imgtec.com>