meta-agl-bsp: update raspberrypi configuration for dunfell
Changes:
- Remove Mesa version over-ride, since dunfell has newer version.
- Remove bcm2835-bootfiles SRCREV updates since dunfell has newer
versions of the files.
- Remove kernel SRCREV update in linux-raspberrypi_4.19.bbappend
since dunfell has newer version, and add include of new
linux-4.19-agl.inc to keep getting CAN qdisc patch.
Bug-AGL: SPEC-3302
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I7f7a9b454de9eb4fae7075b30ee89b3aec4e6a43