Linux stable v5.15.51 brought commit 7a3a4683562e
("ARM: dts: bcm2711-rpi-400: Fix GPIO line names") which was already
part of a local patch which then failed to apply. Remove the already
applied and now failing hunk from the patch to fix the build.
Fixes: 552d76f2be ("kernel: bump 5.15 to 5.15.51")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>