chipset_enable: Mark VX900 as tested

I can confirm a successful reading and writing of MX25L8005 (SPI) on a HP t5550
Thin Client (AMI BIOS 786R9 v1.04).

Change-Id: I190253b0c1920747b710ed7155e78191cce139eb
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-on: https://review.coreboot.org/23030
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
1 file changed