feat(MCPWM): Add mcpwm carrier clk source

The MCPWM carrier is part of the operator and can work independently
without the MCPWM timer being enabled. This commit add the MCPWM
carrier clk source.

components/hal/esp32c6/include/hal/mcpwm_ll.h

@@ -45,6 +45,8 @@ extern "C" {
 #define MCPWM_LL_EVENT_CAPTURE(cap)          (1 << ((cap) + 27))
 
 // Maximum values due to limited register bit width
+#define MCPWM_LL_MAX_TIMER_PRESCALE          256
+#define MCPWM_LL_MAX_CARRIER_PRESCALE        16
 #define MCPWM_LL_MAX_CARRIER_ONESHOT         16
 #define MCPWM_LL_MAX_CAPTURE_PRESCALE        256
 #define MCPWM_LL_MAX_DEAD_DELAY              65536