configs: stm32mp13: increase SYS_MALLOC_F_LEN to 0x210000

Due SCMI update to protocol v2.0, we need to increase
SYS_MALLOC_F_LEN value to avoid following message:
alloc space exhausted ptr 200040 limit 200000

Set SYS_MALLOC_F_LEN to 0x210000 to fix this issue.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/configs/stm32mp13_defconfig b/configs/stm32mp13_defconfig
index 530f6aa..ecd4f86 100644
--- a/configs/stm32mp13_defconfig
+++ b/configs/stm32mp13_defconfig
@@ -1,7 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_STM32MP=y
 CONFIG_TFABOOT=y
-CONFIG_SYS_MALLOC_F_LEN=0x180000
+CONFIG_SYS_MALLOC_F_LEN=0x210000
 CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xc0400000
 CONFIG_ENV_OFFSET=0x900000
 CONFIG_DEFAULT_DEVICE_TREE="st/stm32mp135f-dk"