soc/intel/tigerlake: Move MAX_CPUS to Kconfig

Most of the Kconfig files for Intel SOC devices define the MAX_CPUS
value within src/soc/intel/*/Kconfig.

Move the definition there for Tiger Lake and remove from the mainboard
Kconfig files.

Signed-off-by: Andy Pont <andy.pont@sdcsystems.com>
Change-Id: If145b9eb5d99821f4ce513118e4417d05f821ef5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55307
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/mainboard/google/deltaur/Kconfig

@@ -69,10 +69,6 @@ config MAINBOARD_PART_NUMBER
 	default "Deltan" if BOARD_GOOGLE_DELTAN
 	default "Deltaur" if BOARD_GOOGLE_DELTAUR
 
-config MAX_CPUS
-	int
-	default 8
-
 config TPM_TIS_ACPI_INTERRUPT
 	int
 	default 23  # GPE0_DW0_23 (GPP_C23)

src/mainboard/google/volteer/Kconfig

@@ -110,10 +110,6 @@ config MAINBOARD_PART_NUMBER
 	default "Volet" if BOARD_GOOGLE_VOLET
 	default "Chronicler" if BOARD_GOOGLE_CHRONICLER
 
-config MAX_CPUS
-	int
-	default 8
-
 config PCIEXP_HOTPLUG
 	default y
 

src/mainboard/intel/tglrvp/Kconfig

@@ -56,10 +56,6 @@ config MAINBOARD_FAMILY
 	string
 	default "Intel_tglrvp"
 
-config MAX_CPUS
-	int
-	default 8
-
 config PCIEXP_HOTPLUG
 	default y
 

src/soc/intel/tigerlake/Kconfig

@@ -77,6 +77,10 @@ config CPU_SPECIFIC_OPTIONS
 	select DISPLAY_FSP_VERSION_INFO
 	select HECI_DISABLE_USING_SMM
 
+config MAX_CPUS
+	int
+	default 8
+
 config DCACHE_RAM_BASE
 	default 0xfef00000