******* Description ***********
| ICACHE_SYNC_INT_ST | The bit is used to indicate the interrupt by icache sync done. |
| ICACHE_SYNC_INT_ENA | The bit is used to enable the interrupt by icache sync done. |
| ICACHE_SYNC_INT_CLR | The bit is used to clear the interrupt by icache sync done. |
| DCACHE_SYNC_INT_ST | The bit is used to indicate the interrupt by dcache sync done. |
| DCACHE_SYNC_INT_ENA | The bit is used to enable the interrupt by dcache sync done. |
| DCACHE_SYNC_INT_CLR | The bit is used to clear the interrupt by dcache sync done. |