configs: stm32f746-disco: enable MISC/DM_RESET/STM32_RESET and STM32_RCC

This allows to add rcc MFD support to stm32f746-disco board
This rcc MFD driver manages clock and reset for STM32 SoCs family

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>

configs/stm32f746-disco_defconfig

@@ -30,6 +30,8 @@ CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_NETCONSOLE=y
 CONFIG_CLK=y
 CONFIG_DM_GPIO=y
+CONFIG_MISC=y
+CONFIG_STM32_RCC=y
 # CONFIG_MMC is not set
 CONFIG_MTD=y
 CONFIG_MTD_NOR_FLASH=y
@@ -43,6 +45,8 @@ CONFIG_PINCTRL=y
 CONFIG_PINCTRL_STM32=y
 CONFIG_RAM=y
 CONFIG_STM32_SDRAM=y
+CONFIG_DM_RESET=y
+CONFIG_STM32_RESET=y
 CONFIG_STM32X7_SERIAL=y
 CONFIG_DM_SPI=y
 CONFIG_STM32_QSPI=y