configs: rpi4_32: Enable iProc RNG200

Enable the RNG driver for RPi4 with 32 bit.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
diff --git a/configs/rpi_4_32b_defconfig b/configs/rpi_4_32b_defconfig
index 0a5d3ff..91eeb3c 100644
--- a/configs/rpi_4_32b_defconfig
+++ b/configs/rpi_4_32b_defconfig
@@ -37,6 +37,8 @@
 CONFIG_PINCTRL=y
 # CONFIG_PINCTRL_GENERIC is not set
 CONFIG_DM_RESET=y
+CONFIG_DM_RNG=y
+CONFIG_RNG_IPROC200=y
 # CONFIG_REQUIRE_SERIAL_CONSOLE is not set
 CONFIG_USB=y
 CONFIG_DM_USB=y