configs: visionfive2: Enable JH7110 RNG driver

Enables JH7110 RNG driver to visionfive2 board.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/configs/starfive_visionfive2_defconfig b/configs/starfive_visionfive2_defconfig
index b21754f..b15e7d2 100644
--- a/configs/starfive_visionfive2_defconfig
+++ b/configs/starfive_visionfive2_defconfig
@@ -120,6 +120,8 @@
 CONFIG_SPL_PINCTRL_STARFIVE_JH7110=y
 CONFIG_PINCTRL_STARFIVE=y
 # CONFIG_RAM_SIFIVE is not set
+CONFIG_DM_RNG=y
+CONFIG_RNG_JH7110=y
 CONFIG_SYS_NS16550=y
 CONFIG_CADENCE_QSPI=y
 CONFIG_TIMER_EARLY=y