drm/amd/include: Clean up errors in arct_ip_offset.h

Fix the following errors reported by checkpatch:

ERROR: open brace '{' following struct go on the same line

Signed-off-by: chenxuebing <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/include/arct_ip_offset.h

···
 #define MAX_SEGMENT                                         6
 
 
-struct IP_BASE_INSTANCE
-{
+struct IP_BASE_INSTANCE {
     unsigned int segment[MAX_SEGMENT];
 } __maybe_unused;
 
-struct IP_BASE
-{
+struct IP_BASE {
     struct IP_BASE_INSTANCE instance[MAX_INSTANCE];
 } __maybe_unused;