Allow more CPU cores on Emerald Lake 2 CRB

The Emerald Lake 2 CRB can potentially have more
than 8 CPU cores, so update the number of max cores
accordingly.

Change-Id: Ia42ed8a84916f66dfbfdf2a72cbbed5cea61899b
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/966
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/mainboard/intel/emeraldlake2/Kconfig

@@ -37,7 +37,7 @@ config IRQ_SLOT_COUNT
 
 config MAX_CPUS
 	int
-	default 8
+	default 16
 
 config MAX_PHYSICAL_CPUS
 	int