soc/intel/adl: Increase MAX_CPUS to 32 for RPL

Raptor Lake i9 CPUs have 8P+16E cores for a total of 32 threads.

Change-Id: I26a729a585e7dc14f38c9092056eb0280726f053
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73514
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/alderlake/Kconfig

@@ -158,6 +158,7 @@ config ALDERLAKE_CAR_ENHANCED_NEM
 
 config MAX_CPUS
 	int
+	default 32 if SOC_INTEL_RAPTORLAKE
 	default 24
 
 config DCACHE_RAM_BASE