drm/amd: Fix UBSAN array-index-out-of-bounds for SMU7

mainline inclusion
from mainline-v6.7-rc1
commit 760efbca74a405dc439a013a5efaa9fadc95a8c3
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9RFET
CVE: CVE-2023-52818

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=760efbca74a405dc439a013a5efaa9fadc95a8c3



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For pptable structs that use flexible array sizes, use flexible arrays.

Suggested-by: Felix Held <felix.held@amd.com>
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2874


Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Conflicts:
	drivers/gpu/drm/amd/powerplay/hwmgr/pptable_v1_0.h
Signed-off-by: Ye Bin <yebin10@huawei.com>