conf: Add usbhid and hidbus to GENERIC* kernel configs

Include the new unified HID stack by default in generic.
This will allow us to migrate to the multi-stack hkbd and hms instead of
relying on the older ukbd and ums which only work with USB.
To test those drivers just add hw.usb.usbhid.enable=1 in loader.conf

Differential Revision: https://reviews.freebsd.org/D45658
Reviewed by: emaste, imp, wulf (all older version)
Sponsored by: Beckhoff Automation GmbH & Co. KG

(cherry picked from commit 13d00a43cba4c35fcc9e0ab567baf530126a6348)

conf: hidmap is always needed for hms

So bring it in when hms is in the kernel config

Fixes: 13d00a43cba4 ("conf: Add usbhid and hidbus to GENERIC* kernel configs")
Sponsored by: Beckhoff Automation GmbH & Co. KG

(cherry picked from commit 5ed91e788f0b97c9e6c544671ffef71fad7cad27)

conf: powerpc: Add evdev to some kernel configs

Fixes: 13d00a43cba4 ("conf: Add usbhid and hidbus to GENERIC* kernel configs")
Sponsored by: Beckhoff Automation GmbH & Co. KG

(cherry picked from commit 43a62df0b464e60895084c7f9d9eddf70906fda3)