mb/intel/adlrvp: Make SI_ALL region within 16MiB

TEST=Able to build and boot ADLRVP.

Change-Id: I93da53f8835e0eec4cf4e78daab26332fd55d334
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48753
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/mainboard/intel/adlrvp/chromeos.fmd

@@ -1,5 +1,5 @@
 FLASH@0xfe000000 32M {
-	SI_ALL 0x1081000 {
+	SI_ALL@0x0 0x1000000 {
 		SI_DESC 0x1000
 		SI_EC 0x80000
 		SI_ME