drm/amd: Fix an out of bounds error in BIOS parser

stable inclusion
from stable-v5.10.181
commit b8e7589f50b709b647b642531599e70707faf70c
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8GJZJ

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=b8e7589f50b709b647b642531599e70707faf70c



--------------------------------

[ Upstream commit d116db18 ]

The array is hardcoded to 8 in atomfirmware.h, but firmware provides
a bigger one sometimes. Deferencing the larger array causes an out
of bounds error.

commit 4fc1ba4a ("drm/amd/display: fix array index out of bound error
in bios parser") fixed some of this, but there are two other cases
not covered by it.  Fix those as well.

Reported-by:  <erhard_f@mailbox.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=214853
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2473


Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>