arch/x86: Introduce ARCH_ALL_STAGES_X86_32

Nearly every x86 platform uses the same arch for all stages. The only
exception is Picasso. So, factor out redundant symbols from the rest.

Alder Lake is not yet complete, so it has been skipped for now.

Change-Id: I7cff9efbc44546807d9af089292c69fb0acc7bad
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45731
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/arch/x86/Kconfig

@@ -28,6 +28,13 @@ config ARCH_RAMSTAGE_X86_32
 	bool
 	select ARCH_X86
 
+config ARCH_ALL_STAGES_X86_32
+	bool
+	select ARCH_BOOTBLOCK_X86_32
+	select ARCH_VERSTAGE_X86_32
+	select ARCH_ROMSTAGE_X86_32
+	select ARCH_RAMSTAGE_X86_32
+
 # stage selectors for x64
 
 config ARCH_BOOTBLOCK_X86_64