CHROMIUM: arm64: dts: qcom: Add pm8998/pm8005 gpio line names

Name the GPIO lines from pm8998 and pm8005 so we get nice names in
gpioinfo.

BUG=None
TEST=Run gpioinfo and see names for some GPIOs on the PMICs

Change-Id: I45aacf64f93f611d3d78592eb3471eb177522fe3
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1105300
Reviewed-by: Evan Green <evgreen@chromium.org>