rtc configure register
| GPIO_PIN5_MUX_SEL | use for debug |
| GPIO_PIN4_MUX_SEL | use for debug |
| GPIO_PIN3_MUX_SEL | use for debug |
| GPIO_PIN2_MUX_SEL | use for debug |
| GPIO_PIN1_MUX_SEL | use for debug |
| GPIO_PIN0_MUX_SEL | use for debug |
| GPIO_PIN5_FUN_SEL | use for debug |
| GPIO_PIN4_FUN_SEL | use for debug |
| GPIO_PIN3_FUN_SEL | use for debug |
| GPIO_PIN2_FUN_SEL | use for debug |
| GPIO_PIN1_FUN_SEL | use for debug |
| GPIO_PIN0_FUN_SEL | use for debug |