drm/amd: add new gfx8 register definitions for EDC

#define ixDIDT_DBR_WEIGHT0_3                                                    0x90

#define ixDIDT_DBR_WEIGHT4_7                                                    0x91

#define ixDIDT_DBR_WEIGHT8_11                                                   0x92

#define mmTD_EDC_CNT                                                            0x252e

#define mmCPF_EDC_TAG_CNT                                                       0x3188

#define mmCPF_EDC_ROQ_CNT                                                       0x3189

#define mmCPF_EDC_ATC_CNT                                                       0x318a

#define mmCPG_EDC_TAG_CNT                                                       0x318b

#define mmCPG_EDC_ATC_CNT                                                       0x318c

#define mmCPG_EDC_DMA_CNT                                                       0x318d

#define mmCPC_EDC_SCRATCH_CNT                                                   0x318e

#define mmCPC_EDC_UCODE_CNT                                                     0x318f

#define mmCPC_EDC_ATC_CNT                                                       0x3190

#define mmDC_EDC_STATE_CNT                                                      0x3191

#define mmDC_EDC_CSINVOC_CNT                                                    0x3192

#define mmDC_EDC_RESTORE_CNT                                                    0x3193

#endif /* GFX_8_0_D_H */