udevil: added patch

[ericsagnes]

Added [upstream patch](IgnorantGuru/udevil#59 fixes) to fix udevil build error on current nixos-unstable:

`device-info.c
device-info.c: In function 'info_mount_points':
device-info.c:943:33: error: implicit declaration of function 'stat' [-Werror=implicit-function-declaration]
                                 stat( mount_source, &statbuf ) == 0 &&
                                 ^
device-info.c:944:33: error: implicit declaration of function 'S_ISBLK' [-Werror=implicit-function-declaration]
                                 S_ISBLK( statbuf.st_mode ) )
                                 ^
cc1: some warnings being treated as errors
Makefile:495: recipe for target 'udevil-device-info.o' failed
make[2]: *** [udevil-device-info.o] Error 1
make[2]: Leaving directory '/tmp/nix-build-udevil-0.4.4.drv-0/udevil-0.4.4/src'
Makefile:428: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/tmp/nix-build-udevil-0.4.4.drv-0/udevil-0.4.4'
Makefile:359: recipe for target 'all' failed
make: *** [all] Error 2
builder for ‘/nix/store/gzmrcfnncw4l30ywcnz2gfcjwii4sw3n-udevil-0.4.4.drv’ failed with exit code 2
error: build of ‘/nix/store/gzmrcfnncw4l30ywcnz2gfcjwii4sw3n-udevil-0.4.4.drv’ failed
/run/current-system/sw/bin/nix-shell: failed to build all dependencies

[mention-bot]

By analyzing the blame information on this pull request, we identified @ocharles to be a potential reviewer