drivers/rng: add Amlogic hardware RNG driver

Add support for the hardware random number generator of Amlogic SOCs.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Sughosh Ganu <sughosh.ganu@linaro.org>
diff --git a/drivers/rng/Kconfig b/drivers/rng/Kconfig
index c1aa43b..edb6152 100644
--- a/drivers/rng/Kconfig
+++ b/drivers/rng/Kconfig
@@ -8,6 +8,14 @@
 
 if DM_RNG
 
+config RNG_MESON
+	bool "Amlogic Meson Random Number Generator support"
+	depends on ARCH_MESON
+	default y
+	help
+	  Enable support for hardware random number generator
+	  of Amlogic Meson SoCs.
+
 config RNG_SANDBOX
 	bool "Sandbox random number generator"
 	depends on SANDBOX