mcpwm.h is missing the first 4 enums in mcpwm_sync_signal_t

[gouldpa]

Please update the mcpwm.h file with the following code

`/**

• @brief MCPWM select sync signal input
  /
  typedef enum {
  MCPWM_SELECT_SYNC_OFF /!< SYNC is off*/
  MCPWM_SELECT_SYNC_INT0, /!<Select SYNC0 as internal/
  MCPWM_SELECT_SYNC_INT1, /!<Select SYNC1 as internal/
  MCPWM_SELECT_SYNC_INT2, /!<Select SYNC2 as internal/
  MCPWM_SELECT_SYNC0, /!<Select SYNC0 as input/
  MCPWM_SELECT_SYNC1, /!<Select SYNC1 as input/
  MCPWM_SELECT_SYNC2, /!<Select SYNC2 as input/
  } mcpwm_sync_signal_t;`

The purpose of this code is to use the internal Sync feature for Three Phase PWM signals

https://github.com/espressif/arduino-esp32/blob/04963009eedfbc1e0ea2e1378ae69e7cebda6fd6/tools/sdk/include/driver/driver/mcpwm.h

[lbernstone]

This file comes from the upstream source (esp-idf). You can raise an issue there

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