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-pureio_1.1.8.bb b/meta-raspberrypi/recipes-devtools/python/python3-adafruit-pureio_1.1.8.bb
index 82415f9..a59e6f5 100644
--- a/meta-raspberrypi/recipes-devtools/python/python3-adafruit-pureio_1.1.8.bb
+++ b/meta-raspberrypi/recipes-devtools/python/python3-adafruit-pureio_1.1.8.bb
@@ -3,7 +3,7 @@
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=2a21fcca821a506d4c36f7bbecc0d009"
 
-SRC_URI = "git://github.com/adafruit/Adafruit_Python_PureIO.git"
+SRC_URI = "git://github.com/adafruit/Adafruit_Python_PureIO.git;branch=main"
 SRCREV = "f4d0973da05b8b21905ff6bab69cdb652128f342"
 
 S = "${WORKDIR}/git"