configs/raspberrypi: bump Linux version to 6.1.61

configs/raspberrypi: bump Linux version to 6.1.61

Linux 6.1 has been marked LTS for a long time now. Time to bump
Linux for RaspberryPi's to the latest 6.1.61 Since April 2022
the RaspberryPi defconfigs have compressed kernel module enabled
by default. (see [1] and [2]).

To load compressed kernel modules kmod and xz packages are needed
because busybox doesn't support it.

For testing I used RaspberryPi 2, 3(32+64bit) and 4(32+64bit), all with mdev enabled.

[1] https://github.com/raspberrypi/linux/commit/c45b4223a4e4a8cfe39edbb4949329ea478fa4e2
[2] https://github.com/raspberrypi/linux/issues/4966

Signed-off-by: Bram Oosterhuis <[email protected]>
Reviewed-by: Marcus Hoffmann <[email protected]>
Tested-by: Marcus Hoffmann <[email protected]>
Signed-off-by: Yann E. MORIN <[email protected]>