The gpiokeys(4) 'label' property seems to be optional. If we don't have
authorpatrick <patrick@openbsd.org>
Mon, 7 Nov 2022 20:28:23 +0000 (20:28 +0000)
committerpatrick <patrick@openbsd.org>
Mon, 7 Nov 2022 20:28:23 +0000 (20:28 +0000)
commit4303d0d5bc483d585fe1dd208b83fccad8db7c12
tree2ea6d28ea99fa92cceb4382ec0a7f8922275b040
parenta848a3cb9519d5b1af313d52b0cefadefdc7fa6b
The gpiokeys(4) 'label' property seems to be optional.  If we don't have
any, don't try and print it, and especially don't error out.

Tested on Lenovo x13s (myself) and Pinebook Poop (kn@)
ok kn@
sys/dev/fdt/gpiokeys.c