drm/vtest: fix build failures
Fixes 2 recent regressions from 7f644a81 and 060f4481.
Notes:
- please keep revert CL as clean revert if possible and put new bits in a separate CL
- there's missing ci build coverage for
vtest_fuzzer.c
- there's missing ci build coverage for
CC=clang
CrOS virglrenderer uprev is blocked. Please help send to marge-bot once r-b'ed, thanks!
Edited by Yiwei Zhang