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/Makefile b/arch/arm/Makefile
index 0ce9d0f..320aa57 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -168,6 +168,7 @@
 machine-$(CONFIG_ARCH_KEYSTONE)		+= keystone
 machine-$(CONFIG_ARCH_KS8695)		+= ks8695
 machine-$(CONFIG_ARCH_LPC32XX)		+= lpc32xx
+machine-$(CONFIG_ARCH_MESON)		+= meson
 machine-$(CONFIG_ARCH_MMP)		+= mmp
 machine-$(CONFIG_ARCH_MOXART)		+= moxart
 machine-$(CONFIG_ARCH_MSM)		+= msm