mb/siemens/mc_apl1: Fix wrong register masking

With the previous instruction the complete register was set to '0'.
Correctly, only the bits 23:16 must be masked.

Change-Id: Idd6e70dcb42c69cf3bc5d36db993e6def52eba58
Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76177
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jan Samek <jan.samek@siemens.com>

0 files changed, 0 insertions, 0 deletions