Please disable macro define
/* Enable Alternate mode support as UFP. */
#define UFP_ALT_MODE_SUPP (0u)
/* Enable DP Alternate mode support in UFP mode. */
#define DP_UFP_SUPP (0u)
/* Enable HPD receive functionality. */
#define CCG_HPD_RX_ENABLE (0u)
/* Enable DP Sink mode as a C-DP Dongle. */
#define DP_UFP_DONGLE (0u)
in the example firmware.
When I disabled macro define, I had error: arm-none-eabi-gcc.exe' failed with exit code '1'.
Could you please screen shot the output of error? Or attach your firmware project in this threads?