soc: st: stm32l0x: Move stack definitions to the correct place

Move CONFIG_MAIN_STACK_SIZE to be the default in the
Kconfig.defconfig files and avoid code duplication in each
related soc.
SOC_STM32L011XX has its own configuration so keep it in its
soc file.

Signed-off-by: Fabrice DJIATSA <fabrice.djiatsa-ext@st.com>

Author: djiatsaf-st

boards/st/nucleo_l011k4/nucleo_l011k4_defconfig

@@ -1,10 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-# Kernel Options due to Low Memory (2k)
-CONFIG_MAIN_STACK_SIZE=320
-CONFIG_IDLE_STACK_SIZE=100
-CONFIG_ISR_STACK_SIZE=256
-
 # Serial Drivers
 CONFIG_SERIAL=y
 CONFIG_UART_INTERRUPT_DRIVEN=y

boards/st/nucleo_l031k6/nucleo_l031k6_defconfig

@@ -1,10 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-# Kernel Options due to Low Memory (8k)
-CONFIG_MAIN_STACK_SIZE=640
-CONFIG_IDLE_STACK_SIZE=200
-CONFIG_ISR_STACK_SIZE=512
-
 # Serial Drivers
 CONFIG_SERIAL=y
 CONFIG_UART_INTERRUPT_DRIVEN=y

boards/st/nucleo_l053r8/nucleo_l053r8_defconfig

@@ -3,11 +3,6 @@
 # Enable MPU
 CONFIG_ARM_MPU=y
 
-# Kernel Options due to Low Memory (8k)
-CONFIG_MAIN_STACK_SIZE=640
-CONFIG_IDLE_STACK_SIZE=200
-CONFIG_ISR_STACK_SIZE=512
-
 # Serial Drivers
 CONFIG_SERIAL=y
 CONFIG_UART_INTERRUPT_DRIVEN=y

soc/st/stm32/stm32l0x/Kconfig.defconfig

@@ -14,4 +14,14 @@ config TASK_WDT_HW_FALLBACK_DELAY
 	depends on TASK_WDT_HW_FALLBACK
 	default 200
 
+# Kernel Options due to Low Memory (8k)
+config MAIN_STACK_SIZE
+        default 640 if SOC_STM32L053XX || SOC_STM32L031XX
+
+config IDLE_STACK_SIZE
+        default 200 if SOC_STM32L053XX || SOC_STM32L031XX
+
+config ISR_STACK_SIZE
+	  default 512 if SOC_STM32L053XX || SOC_STM32L031XX
+
 endif # SOC_SERIES_STM32L0X

soc/st/stm32/stm32l0x/Kconfig.defconfig.stm32l011xx

@@ -8,4 +8,14 @@ if SOC_STM32L011XX
 config NUM_IRQS
 	default 32
 
+# Kernel Options due to Low Memory (2k)
+config MAIN_STACK_SIZE
+        default 320
+
+config IDLE_STACK_SIZE
+        default 100
+
+config ISR_STACK_SIZE
+	default 256
+
 endif # SOC_STM32L011XX