ARM: multi_v7_defconfig: Add MCP23S08 pinctrl support

Need to enable MCP23S08 I/O expanders to manage Ethernet phy
reset in STM32MP135F-DK board
STMMAC driver defer is not silent, need to put this config in
built-in to avoid huge of Ethernet messages

Signed-off-by: Christophe Roullier <christophe.roullier@foss.st.com>
Signed-off-by: NipaLocal <nipa@local>

Author: Christophe Roullier

arch/arm/configs/multi_v7_defconfig

@@ -469,6 +469,7 @@ CONFIG_SPI_XILINX=y
 CONFIG_SPI_SPIDEV=y
 CONFIG_SPMI=y
 CONFIG_PINCTRL_AS3722=y
+CONFIG_PINCTRL_MCP23S08=y
 CONFIG_PINCTRL_MICROCHIP_SGPIO=y
 CONFIG_PINCTRL_OCELOT=y
 CONFIG_PINCTRL_PALMAS=y