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/Makefile b/drivers/rng/Makefile
index 8953406..39f7ee3 100644
--- a/drivers/rng/Makefile
+++ b/drivers/rng/Makefile
@@ -9,3 +9,4 @@
 obj-$(CONFIG_RNG_MSM) += msm_rng.o
 obj-$(CONFIG_RNG_STM32MP1) += stm32mp1_rng.o
 obj-$(CONFIG_RNG_ROCKCHIP) += rockchip_rng.o
+obj-$(CONFIG_RNG_IPROC200) += iproc_rng200.o