MSPI MMU power control register
| SPI_MMU_MEM_FORCE_ON | Set this bit to enable mmu-memory clock force on |
| SPI_MMU_MEM_FORCE_PD | Set this bit to force mmu-memory powerdown |
| SPI_MMU_MEM_FORCE_PU | Set this bit to force mmu-memory powerup, in this case, the power should also be controlled by rtc. |
| SPI_MEM_AUX_CTRL | MMU PSRAM aux control register |
| SPI_MEM_RDN_ENA | ECO register enable bit |
| SPI_MEM_RDN_RESULT | MSPI module clock domain and AXI clock domain ECO register result register |