amd/vpelib: Fix VPELIB Build Warnings

Fix build warnings.

Signed-off-by: Iswara Nagulendran <Iswara.Nagulendran@amd.com>
Reviewed-by: Roy Chan <Roy.Chan@amd.com>
Acked-by: ChuanYu Tseng <ChuanYu.Tseng@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35012>
3 files changed