Update feature support for Proton C (#7596)

Added a couple of entries for some features not currently supported on Proton C.

diff --git a/docs/proton_c_conversion.md b/docs/proton_c_conversion.md
index 8014a35e04cb49191b27aa5537b278c82f67a949..dc0a3f4849189dad14af903d5e17ed91310f8e9c 100644 (file)
--- a/docs/proton_c_conversion.md
+++ b/docs/proton_c_conversion.md
@@ -29,3 +29,5 @@ These are defaults based on what has been implemented for ARM boards.
 | [Audio](feature_audio.md)           | Enabled                                                                                                          |  
 | [RGB Lighting](feature_rgblight.md) | Disabled                                                                                                         |
 | [Backlight](feature_backlight.md)   | Forces [task driven PWM](feature_backlight.md#software-pwm-driver) until ARM can provide automatic configuration |
+| USB Host (e.g. USB-USB converter)   | Not supported (USB host code is AVR specific and is not currently supported on ARM)                              |
+| [Split keyboards](feature_split_keyboard.md) | Not supported yet                                                                                       |