src/device/Kconfig: make help for VGA_BIOS_ID and PXE_ROM_ID more similar

Add to VGA_BIOS_ID the hint about lspci -nn and add to PXE_ROM_ID an
empty line at the end for better readability in menuconfig.

Change-Id: I56751c047c1ff08142e2af58ef3ba5fe1169eba5
Signed-off-by: Daniele Forsi <dforsi@gmail.com>
Reviewed-on: http://review.coreboot.org/6301
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
cpu/intel/fsp_model_206ax/model_206ax_init.c: Use macro `IS_ENABLED()`

Change-Id: I91cd84d155a2cb1200cb82c31256cfa743e8ea9b
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/6227
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>