ARM: meson: add basic support for MesonX SoCs

This patch adds the basic machine file for the MesonX SoCs. Only Meson6
is populated.

Signed-off-by: Carlo Caione <carlo@caione.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index cf6da52..3c84006 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -889,6 +889,8 @@
 
 source "arch/arm/mach-ks8695/Kconfig"
 
+source "arch/arm/mach-meson/Kconfig"
+
 source "arch/arm/mach-msm/Kconfig"
 
 source "arch/arm/mach-moxart/Kconfig"