Trying to configure for p2p-device support

[iamogopogo]

As the title says, I'm trying to compile to enable p2p-device support, to use with Lazycast...a Miracast alternative for the Raspberry Pi. The onboard chip of the Pi supports P2P-client, P2P-GO, and P2P-device. Lazycast uses p2p-device-wlan0, and the onboard chip is recognized when using 'sudo wpa_cli interface' as p2p-device-wlan0. But with the external dongle, a T4UH (rtl8812au), it only shows support for P2P-client, P2P-GO, with no P2P-device, and 'sudo wpa_cli interface' only shows wlan0.

I've tried adding 'EXTRA_CFLAGS += -DCONFIG_P2P_IPS' and 'EXTRA_CFLAGS += -DRTW_P2P_GROUP_INTERFACE=1' to the 'ifeq ($(CONFIG_PLATFORM_ARM_RPI), y)' section (line 904 of the Makefile), then recompiled, but it's still not showing support for P2P-device, and still only recognizing wlan0.

Is there something else I need to add or uncomment? Any hep would be appreciated. Cheers.