This update for raspberrypi-firmware, u-boot fixes the following issues:

The raspberrypi-firmware was updated to 6e4a7232c (2019-11-19):

- Added support for CM3+ (bsc#1157822)
- Allow user defined config options (bsc#1088356)
- Move HDMI workaround to rpi3 section (fixes RPi2 HDMI output)

The u-boot bootloader was updated:

- Fixed the USB keyboard in grub on the RasperryPi (bsc#1160566):
- Added support for Raspberry Pi Compute Module 3+ (bsc#1157822)

This update was imported from the SUSE:SLE-15-SP1:Update update project.