GPD Pocket 2 screen rotation GRUB commandline improvement video=eDP-1:panel_orientation=right_side_up

[avoiceofreason]

I've discovered that both GRUB and Plymouth rotation to landscape works much better with video=eDP-1:panel_orientation=right_side_up on the GPD Pocket 2.

I'd suggest changing gpd-pocket2.cfg from:

GRUB_CMDLINE_LINUX="${GRUB_CMDLINE_LINUX} fbcon=rotate:1"
GRUB_GFXMODE=1200x1920x32

to:

GRUB_CMDLINE_LINUX="${GRUB_CMDLINE_LINUX} splash video=eDP-1:panel_orientation=right_side_up"
GRUB_GFXMODE=1200x1920x32