Merge pull request #434 from FoamyGuy/add_usb_host_descriptors

adding USB Host Descriptors

Author: tannewt

.gitmodules

@@ -953,3 +953,6 @@
 [submodule "libraries/drivers/ek79686"]
 	path = libraries/drivers/ek79686
 	url = https://github.com/adafruit/Adafruit_CircuitPython_EK79686.git
+[submodule "libraries/helpers/usb_host_descriptors"]
+	path = libraries/helpers/usb_host_descriptors
+	url = https://github.com/adafruit/Adafruit_CircuitPython_USB_Host_Descriptors.git

docs/drivers.rst

@@ -220,6 +220,7 @@ Miscellaneous Helpers
     SimpleMath <https://docs.circuitpython.org/projects/simplemath/en/latest/>
     Test Repo <https://docs.circuitpython.org/projects/testrepo/en/latest/>
     USB HID - Human Interface Device (Keyboard and Mouse) <https://docs.circuitpython.org/projects/hid/en/latest/>
+    USB Host Descriptors <https://docs.circuitpython.org/projects/usb-host-descriptors/en/latest/>
     Ticks <https://docs.circuitpython.org/projects/ticks/en/latest/>
 
 Blinky