meta-google: gbmc.conf: require versions of npcm8xx boot images

These specific versions are needed to boot on Google hardware, so
override the defaults.

Signed-off-by: Benjamin Fair <benjaminfair@google.com>
Change-Id: I200ed7e281868b6bb2ba08129fc122b55d754848
diff --git a/meta-google/conf/distro/gbmc.conf b/meta-google/conf/distro/gbmc.conf
index 7b5ca3d..805380b 100644
--- a/meta-google/conf/distro/gbmc.conf
+++ b/meta-google/conf/distro/gbmc.conf
@@ -33,3 +33,6 @@
 
 # Force the patches to not have any fuzz for gBMC
 ERROR_QA:append = " patch-fuzz"
+
+REQUIRED_VERSION_npcm8xx-igps-native = "03.07.02-Google"
+REQUIRED_VERSION_npcm8xx-tip-fw = "0.4.5.0.3.4-GOOGLE"