rng: Add iProc RNG200 driver

Add support for random number generator RNG200.
This is for example found on RPi4.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
[mb: adapt to new struct driver memebers]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
diff --git a/drivers/rng/Kconfig b/drivers/rng/Kconfig
index 11001c8..94915d4 100644
--- a/drivers/rng/Kconfig
+++ b/drivers/rng/Kconfig
@@ -46,4 +46,10 @@
 	  Enable random number generator for rockchip.This driver is
 	  support rng module of crypto v1 and crypto v2.
 
+config RNG_IPROC200
+	bool "Broadcom iProc RNG200 random number generator"
+	depends on DM_RNG
+	default n
+	help
+	  Enable random number generator for RPI4.
 endif