drm/amd/include:cleanup vega10 mp header files.

Cleanup asic_reg/vega10/MP folder, remove mp_9_0_default.h

Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/soc15.c

@@ -42,8 +42,8 @@
 #include "sdma1/sdma1_4_0_offset.h"
 #include "hdp/hdp_4_0_offset.h"
 #include "hdp/hdp_4_0_sh_mask.h"
-#include "vega10/MP/mp_9_0_offset.h"
-#include "vega10/MP/mp_9_0_sh_mask.h"
+#include "mp/mp_9_0_offset.h"
+#include "mp/mp_9_0_sh_mask.h"
 #include "vega10/SMUIO/smuio_9_0_offset.h"
 #include "vega10/SMUIO/smuio_9_0_sh_mask.h"