pineview boards: Factor out MAX_CPUS

Pineview has at most 4 threads.

Change-Id: I0f45f002d0bab0345bc061ac3c7a29237a536cc5
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41843
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/cpu/intel/socket_FCBGA559/Kconfig

@@ -27,4 +27,8 @@ config DCACHE_BSP_STACK_SIZE
 	  The amount of anticipated stack usage in CAR by bootblock and
 	  other stages.
 
+config MAX_CPUS
+	int
+	default 4
+
 endif

src/mainboard/foxconn/d41s/Kconfig

@@ -18,10 +18,6 @@ config BOARD_SPECIFIC_OPTIONS
 	select DRIVERS_I2C_CK505
 	select INTEL_GMA_HAVE_VBT
 
-config MAX_CPUS
-	int
-	default 4
-
 config MAINBOARD_DIR
 	string
 	default "foxconn/d41s"

src/mainboard/intel/d510mo/Kconfig

@@ -18,10 +18,6 @@ config BOARD_SPECIFIC_OPTIONS
 	select DRIVERS_I2C_CK505
 	select INTEL_GMA_HAVE_VBT
 
-config MAX_CPUS
-	int
-	default 4
-
 config MAINBOARD_DIR
 	string
 	default "intel/d510mo"