rpi-bootfiles: Resort to github APIs for tarballs

The firmware repo is huge ( 36G ) to clone is onerous
using shallow clone tarballs require them to be pre-populated
at some mirror which we don't have. Third option is to let
github provide the tarball, there is concern that tarballs
might change the compression etc and thus checksum would change
that is something github would communicate to users in advance [1]

Therefore this is the best solution for us right now.

Also upgrade to latest while here and drop PR settings

[1] https://docs.github.com/en/repositories/working-with-files/using-files/downloading-source-code-archives#stability-of-source-code-archives

Signed-off-by: Khem Raj <raj.khem@gmail.com>

recipes-bsp/bootfiles/rpi-bootfiles.bb

@@ -5,7 +5,16 @@ LIC_FILES_CHKSUM = "file://LICENCE.broadcom;md5=c403841ff2837657b2ed8e5bb474ac8d
 
 inherit deploy nopackages
 
-include recipes-bsp/common/raspberrypi-firmware.inc
+RPIFW_DATE ?= "20240319"
+SRCREV = "9f24f4bc2bdd07ffd158cfbb4bce88a2efc4c1f5"
+SHORTREV = "${@d.getVar("SRCREV", False).__str__()[:7]}"
+RPIFW_SRC_URI ?= "https://api.github.com/repos/raspberrypi/firmware/tarball/9f24f4bc2bdd07ffd158cfbb4bce88a2efc4c1f5;downloadfilename=raspberrypi-firmware-${SHORTREV}.tar.gz"
+RPIFW_S ?= "${WORKDIR}/raspberrypi-firmware-${SHORTREV}"
+
+SRC_URI = "${RPIFW_SRC_URI}"
+SRC_URI[sha256sum] = "4b436f8946b139c6a1202375ef55d4848e3bcd8c1a9cb47000e06d7ecec828f7"
+
+PV = "${RPIFW_DATE}"
 
 INHIBIT_DEFAULT_DEPS = "1"