meta-nuvoton: npcm8xx-igps: update to 03.08.00

Also remove Google-specific version since it has been merged into the
mainline branch.

Changelog:

IGPS 03.08.00              - Dec 15th 2022
==============
- TIP_FW: 0.5.0 L0 0.3.9 L1
- Code cleanup for production.
- bug fix key selection during recovery.
- Add DME+RIOT data export to PCI MBOX.
- align BMC and TIP that both will use PLL2 and not CLKREF.
- Bug fix: don't save previous INTCR2 for reset indication.
- Bug fix: update flow using wrong KMT.
- TIP_FW: 0.5.0 L0 0.3.9 L1 GOOGLE3
    - aligned to the above release.
- split SFDP
- enable flag CERBERUS_SECURE_BOOT_ONLY
- uboot https://github.com/Nuvoton-Israel/u-boot/releases/tag/v2021.04-npcm8xx-20221215
- OpTee: https://github.com/Nuvoton-Israel/optee_os/releases/tag/npcm845x_3.18.0_v1.0
- linux offset 4MB.
- Update scripts to sign in yocto build (signatures only).

Signed-off-by: Benjamin Fair <benjaminfair@google.com>
Change-Id: I396a8e05bc6aa53fd6c7062ed342ce1f26b7e2fb
diff --git a/meta-google/conf/distro/gbmc.conf b/meta-google/conf/distro/gbmc.conf
index 805380b..90a5e3a 100644
--- a/meta-google/conf/distro/gbmc.conf
+++ b/meta-google/conf/distro/gbmc.conf
@@ -34,5 +34,5 @@
 # Force the patches to not have any fuzz for gBMC
 ERROR_QA:append = " patch-fuzz"
 
-REQUIRED_VERSION_npcm8xx-igps-native = "03.07.02-Google"
+IGPS_MACHINE:npcm8xx = "Google"
 REQUIRED_VERSION_npcm8xx-tip-fw = "0.4.5.0.3.4-GOOGLE"