platform: hp_accel: Add SERIO_I8042 as a dependency since it now includes i8042.h/serio.h

Make hp_accel dependent on SERIO_I8042 in the Kconfig because since commit
a4c724d0 ('platform: hp_accel: add a i8042
filter to remove HPQ6000 data from kb bus stream') hp_accel includes i8042.h
and serio.h.

Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Giedrius Statkevičius <giedriuswork@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>