rng: Introduce SPL_DM_RNG
Add SPL variant of DM_RNG so that the DM_RNG can be disabled in SPL
if necessary. This may be necessary due to e.g. size constraints of
the SPL.
Signed-off-by: Marek Vasut <marex@denx.de>
diff --git a/drivers/rng/Kconfig b/drivers/rng/Kconfig
index cd72852..5758ae1 100644
--- a/drivers/rng/Kconfig
+++ b/drivers/rng/Kconfig
@@ -6,6 +6,13 @@
This interface is used to initialise the rng device and to
read the random seed from the device.
+config SPL_DM_RNG
+ bool "Driver support for Random Number Generator devices in SPL"
+ depends on SPL_DM
+ help
+ This option is an SPL-variant of the DM_RNG option.
+ See the help of DM_RNG for details.
+
if DM_RNG
config RNG_MESON