sb/intel/ibexpeak: Drop Global NVS support

Was copy-pasted from bd82x6x and no mainboard actually needs it.

The few globals moved outside the GNVS will be removed, relocated or
replaced with acpigen later.

Change-Id: I590a355f1bd1e54365b2e329cfdc62384446a15c
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49280
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/northbridge/intel/ironlake/acpi/hostbridge.asl b/src/northbridge/intel/ironlake/acpi/hostbridge.asl
index 62ca81a..5e6ad52 100644
--- a/src/northbridge/intel/ironlake/acpi/hostbridge.asl
+++ b/src/northbridge/intel/ironlake/acpi/hostbridge.asl
@@ -5,6 +5,8 @@
 
 Name(_BBN, 0)
 
+Name(\PPCM, 0)
+
 Device (MCHC)
 {
 	Name(_ADR, 0x00000000)	// 0:0.0