drm/amdgpu: add system interrupt register offset header

Add new register offset for enabling system interrupt.
Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Acked-by: Leo Liu <leo.liu at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/include/asic_reg/vcn/vcn_1_0_offset.h

@@ -307,6 +307,8 @@
 #define mmUVD_LMI_CTRL2_BASE_IDX                                                                       1
 #define mmUVD_MASTINT_EN                                                                               0x0540
 #define mmUVD_MASTINT_EN_BASE_IDX                                                                      1
+#define mmUVD_SYS_INT_EN                                                                               0x0541
+#define mmUVD_SYS_INT_EN_BASE_IDX                                                                      1
 #define mmJPEG_CGC_CTRL                                                                                0x0565
 #define mmJPEG_CGC_CTRL_BASE_IDX                                                                       1
 #define mmUVD_LMI_CTRL                                                                                 0x0566