mb/amd/padmelon: Remove PS/2 keyboard driver selection

Most payloads, like GRUB, SeaBIOS and Linux, are able to initialize the
PS/2 keyboard themselves, so coreboot does not need to initialize it.
Therefore, this option should not be hard-coded for the mainboard, and
be left for the user to select.

Change-Id: Ibfb7efa22c525e60399afc198af6632330faaac3
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40752
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/mainboard/amd/padmelon/Kconfig

@@ -20,7 +20,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select AMD_APU_PKG_FP4
 	select BOARD_ROMSIZE_KB_8192
 	select DRIVERS_I2C_GENERIC
-	select DRIVERS_PS2_KEYBOARD
 	select HAVE_ACPI_TABLES
 	select GFXUMA
 	select STONEYRIDGE_LEGACY_FREE