config: stm32mp15: Enable STMFX support

Activate PINCTRL_STMFX and needed part for generic pincontrol
PINCTRL_FULL, PINCONF. Increase pre-reloc memory for MALLOC
(needed for each DM pinconfig node).

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/configs/stm32mp15_basic_defconfig b/configs/stm32mp15_basic_defconfig
index ac52155..6781adb 100644
--- a/configs/stm32mp15_basic_defconfig
+++ b/configs/stm32mp15_basic_defconfig
@@ -1,6 +1,6 @@
 CONFIG_ARM=y
 CONFIG_ARCH_STM32MP=y
-CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_SYS_MALLOC_F_LEN=0x3000
 CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_SPL=y
 CONFIG_TARGET_STM32MP1=y
@@ -55,8 +55,9 @@
 CONFIG_STM32_SDMMC2=y
 CONFIG_PHY=y
 CONFIG_PHY_STM32_USBPHYC=y
-# CONFIG_PINCTRL_FULL is not set
+CONFIG_PINCONF=y
 # CONFIG_SPL_PINCTRL_FULL is not set
+CONFIG_PINCTRL_STMFX=y
 CONFIG_DM_PMIC=y
 # CONFIG_SPL_PMIC_CHILDREN is not set
 CONFIG_PMIC_STPMIC1=y