arch/x86: Select HAVE_ASAN_IN_RAMSTAGE

Enable ASan in ramstage if ASAN is selected in menuconfig for an
x86 platform.

Change-Id: Id5b3dc18368a5da6bdc70c84527b95d1688dc19f
Signed-off-by: Harshit Sharma <harshitsharmajs@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44259
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/arch/x86/Kconfig

@@ -4,6 +4,7 @@ config ARCH_X86
 	bool
 	select PCI
 	select RELOCATABLE_MODULES
+	select HAVE_ASAN_IN_RAMSTAGE
 
 # stage selectors for x86