Hardware feature register
| CARD_TYPE | Hardware support SDIO and MMC. |
| CARD_NUM | Support card number is 2. |
| BUS_TYPE | Register config is APB bus. |
| DATA_WIDTH | Regisger data widht is 32. |
| ADDR_WIDTH | Register address width is 32. |
| DMA_WIDTH | DMA data witdth is 32. |
| RAM_INDISE | Inside RAM in SDMMC module. |
| HOLD | Have a hold regiser in data path . |
| NUM_CLK_DIV | Have 4 clk divider in design . |