meta-agl-bsp: Rework gpsd configuration

To remove the use of a "virtual/" prefixed RPROVIDES as part of
futureproofing for YP 5.0 / Scarthgap, rework the machine-specific
gpsd configuration scheme to based on the gpsd-machine-conf recipe
that is intended for this upstream.

Bug-AGL: SPEC-5067

Change-Id: Ie7fda1e936982e7d43bb0af6ee4e90ab4dae9477
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/29688
ci-image-build: Jenkins Job builder account
ci-image-boot-test: Jenkins Job builder account
Tested-by: Jenkins Job builder account