stm32mp1: Move ENV_SIZE and ENV_OFFSET to Kconfig

Add arch stm32mp for ENV migration step and drop more
items from include/configs/xxx.h.
Signed-off-by: NPatrick Delaunay <patrick.delaunay@st.com>

arch/arm/mach-stm32mp/Kconfig

@@ -26,6 +26,9 @@ config SYS_SOC
 config SYS_MALLOC_LEN
 	default 0x2000000
 
+config ENV_SIZE
+	default 0x1000
+
 config TARGET_STM32MP1
 	bool "Support stm32mp1xx"
 	select ARCH_SUPPORT_PSCI if !STM32MP1_TRUSTED

env/Kconfig

@@ -470,7 +470,7 @@ config ENV_EXT4_FILE
 	  It's a string of the EXT4 file name. This file use to store the
 	  environment (explicit path to the file)
 
-if ARCH_ROCKCHIP || ARCH_SUNXI || ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL || ARC
+if ARCH_ROCKCHIP || ARCH_SUNXI || ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL || ARC || ARCH_STM32MP
 
 config ENV_OFFSET
 	hex "Environment Offset"

include/configs/stm32mp1.h

@@ -38,11 +38,6 @@
  */
 #define CONFIG_SYS_LOAD_ADDR			STM32_DDR_BASE
 
-/*
- * Env parameters
- */
-#define CONFIG_ENV_SIZE				SZ_4K
-
 /* ATAGs */
 #define CONFIG_CMDLINE_TAG
 #define CONFIG_SETUP_MEMORY_TAGS