configs: stm32mp15: move bootdelay configuration in defconfig

The STM32MP15 boards have no reason to configure bootdelay in stm32mp1.h
as it is already done with CONFIG_BOOTDELAY (default = 2) and in
include/env_default.h.

This patch allows configuration for customers which reuse stm32mp1.h
and reduce the size of the default environment.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/configs/stm32mp15_basic_defconfig b/configs/stm32mp15_basic_defconfig
index 1c68098..0864d4f 100644
--- a/configs/stm32mp15_basic_defconfig
+++ b/configs/stm32mp15_basic_defconfig
@@ -20,6 +20,7 @@
 CONFIG_DEFAULT_DEVICE_TREE="stm32mp157c-ev1"
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_FIT=y
+CONFIG_BOOTDELAY=1
 CONFIG_BOOTCOMMAND="run bootcmd_stm32mp"
 CONFIG_SPL_LOG=y
 CONFIG_BOARD_EARLY_INIT_F=y
diff --git a/configs/stm32mp15_dhcom_basic_defconfig b/configs/stm32mp15_dhcom_basic_defconfig
index ed285e9..e36d34d 100644
--- a/configs/stm32mp15_dhcom_basic_defconfig
+++ b/configs/stm32mp15_dhcom_basic_defconfig
@@ -19,6 +19,7 @@
 CONFIG_SPL_LOAD_FIT=y
 CONFIG_SPL_FIT_SOURCE="board/dhelectronics/dh_stm32mp1/u-boot-dhcom.its"
 # CONFIG_USE_SPL_FIT_GENERATOR is not set
+CONFIG_BOOTDELAY=1
 CONFIG_BOOTCOMMAND="run bootcmd_stm32mp"
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_SPL_LEGACY_IMAGE_SUPPORT=y
diff --git a/configs/stm32mp15_dhcor_basic_defconfig b/configs/stm32mp15_dhcor_basic_defconfig
index a662056..4794b1a 100644
--- a/configs/stm32mp15_dhcor_basic_defconfig
+++ b/configs/stm32mp15_dhcor_basic_defconfig
@@ -17,6 +17,7 @@
 CONFIG_SPL_LOAD_FIT=y
 CONFIG_SPL_FIT_SOURCE="board/dhelectronics/dh_stm32mp1/u-boot-dhcor.its"
 # CONFIG_USE_SPL_FIT_GENERATOR is not set
+CONFIG_BOOTDELAY=1
 CONFIG_BOOTCOMMAND="run bootcmd_stm32mp"
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_SPL_LEGACY_IMAGE_SUPPORT=y
diff --git a/configs/stm32mp15_trusted_defconfig b/configs/stm32mp15_trusted_defconfig
index 13ee75e..7c32eb7 100644
--- a/configs/stm32mp15_trusted_defconfig
+++ b/configs/stm32mp15_trusted_defconfig
@@ -13,6 +13,7 @@
 CONFIG_DEFAULT_DEVICE_TREE="stm32mp157c-ev1"
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_FIT=y
+CONFIG_BOOTDELAY=1
 CONFIG_BOOTCOMMAND="run bootcmd_stm32mp"
 CONFIG_SYS_PROMPT="STM32MP> "
 CONFIG_CMD_ADTIMG=y
diff --git a/include/configs/stm32mp1.h b/include/configs/stm32mp1.h
index 36e4004..db2117a 100644
--- a/include/configs/stm32mp1.h
+++ b/include/configs/stm32mp1.h
@@ -160,7 +160,6 @@
  * and the ramdisk at the end.
  */
 #define CONFIG_EXTRA_ENV_SETTINGS \
-	"bootdelay=1\0" \
 	"kernel_addr_r=0xc2000000\0" \
 	"fdt_addr_r=0xc4000000\0" \
 	"scriptaddr=0xc4100000\0" \