[SUGGESTION] Add checks for linux-zen-headers and linux-hardened-headers

[AlexanderCurl]

As these kernel headers present in the main Arch repositories, please add it to the checks, so the PKGBUILD does not complain to missing linux-headers.
I am using linux-zen, the PKGBUILD worked just fine.
Not a big deal, but might be a quality of life change. :)

https://github.com/Frogging-Family/nvidia-all/blob/master/PKGBUILD#L185