drm/amdgpu: clean up some inconsistent indenting

No functional modification involved.

drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c:34 nbio_v7_11_get_rev_id() warn: inconsistent indenting.

v2: drop leftover printk (Alex)

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=6316


Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>