Configures CPU stall options
| CPU_STALL_EN | Enables CPU stalling. |
| CPU_STALL_WAIT | Sets the CPU stall waiting cycle (using the RTC fast clock). |
| CK8M_WAIT | Sets the 8 MHz clock waiting (using the RTC slow clock). |
| XTL_BUF_WAIT | Sets the XTAL waiting cycle (using the RTC slow clock). |
| PLL_BUF_WAIT | Sets the PLL waiting cycle (using the RTC slow clock). |