mb/kontron/bsl6: Set board type to mobile for memory config

Given the embedded nature, the Halo SKU, SO-DIMMs and 1 DIMM per
channel, `mobile` seems to come closest.

Change-Id: Ia27f1e4dec0a0d06be3d8c08bfe82becd41a2149
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67399
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/mainboard/kontron/bsl6/romstage.c

@@ -39,5 +39,7 @@ void mainboard_memory_init_params(FSPM_UPD *mupd)
 	memory_params->DqPinsInterleaved = true;
 	memory_params->CaVrefConfig = 2;
 
+	memory_params->UserBd = BOARD_TYPE_MOBILE;
+
 	variant_memory_init_params(mupd);
 }