rp2: Use local tinyusb instead of the one in pico-sdk.

So that all MicroPython ports that use tinyusb use the same version.  Also
requires fewer submodule checkouts when building rp2 along with other ports
that use tinyusb.

Signed-off-by: Damien George <damien@micropython.org>

ports/rp2/CMakeLists.txt

@@ -14,6 +14,9 @@ else()
     set(PICO_SDK_PATH ../../lib/pico-sdk)
 endif()
 
+# Use the local tinyusb instead of the one in pico-sdk
+set(PICO_TINYUSB_PATH ${MPY_DIR}/lib/tinyusb)
+
 # Include component cmake fragments
 include(micropy_py.cmake)
 include(micropy_extmod.cmake)

tools/ci.sh

@@ -195,8 +195,7 @@ function ci_rp2_setup {
 
 function ci_rp2_build {
     make ${MAKEOPTS} -C mpy-cross
-    git submodule update --init lib/pico-sdk
-    git -C lib/pico-sdk submodule update --init lib/tinyusb
+    git submodule update --init lib/pico-sdk lib/tinyusb
     make ${MAKEOPTS} -C ports/rp2
 }