ARM: multi_v7_defconfig: enable STMFX pinctrl support

This patch enables support for STMFX pinctrl.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/configs/multi_v7_defconfig

@@ -413,6 +413,7 @@ CONFIG_SPI_SPIDEV=y
 CONFIG_SPMI=y
 CONFIG_PINCTRL_AS3722=y
 CONFIG_PINCTRL_RZA2=y
+CONFIG_PINCTRL_STMFX=y
 CONFIG_PINCTRL_PALMAS=y
 CONFIG_PINCTRL_APQ8064=y
 CONFIG_PINCTRL_APQ8084=y