meta-raspberrypi: subtree update:17b56ab075..8dc3a31088

Andrei Gherzan (1):
      rpi-cmdline: Make rootfstype easier to customize

Martin Jansa (1):
      python3-adafruit-*: fix branch parameter

Omer Akram (1):
      Update raspberrypi firmware to 20210527

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I04fd1914fc163c98595bd66483db61e7710be7b0
diff --git a/meta-raspberrypi/recipes-devtools/python/python3-adafruit-circuitpython-pca9685_3.3.4.bb b/meta-raspberrypi/recipes-devtools/python/python3-adafruit-circuitpython-pca9685_3.3.4.bb
index 0b65c81..a46b130 100644
--- a/meta-raspberrypi/recipes-devtools/python/python3-adafruit-circuitpython-pca9685_3.3.4.bb
+++ b/meta-raspberrypi/recipes-devtools/python/python3-adafruit-circuitpython-pca9685_3.3.4.bb
@@ -3,7 +3,7 @@
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=e7eb6b599fb0cfb06485c64cd4242f62"
 
-SRC_URI = "git://github.com/adafruit/Adafruit_CircuitPython_PCA9685.git"
+SRC_URI = "git://github.com/adafruit/Adafruit_CircuitPython_PCA9685.git;branch=main"
 SRCREV = "2780c4102f4c23fbab252aa1198b61ba7e2d1b2c"
 
 S = "${WORKDIR}/git"