feat: Add target platform choise, default esp8266

Not support esp32 now.

Kconfig

@@ -4,11 +4,23 @@
 #
 mainmenu "Espressif IoT Development Framework Configuration"
 
+choice TARGET_PLATFORM
+   bool "Espressif target platform choose"
+   default TARGET_PLATFORM_ESP8266
+   help
+       Choose the specific target platform which you will use.
+
+config TARGET_PLATFORM_ESP32
+   bool "esp32"
+config TARGET_PLATFORM_ESP8266
+   bool "esp8266"
+endchoice
 
 menu "SDK tool configuration"
 config TOOLPREFIX
-    string "Compiler toolchain path/prefix"
+    string
-    default "xtensa-lx106-elf-"
+    default "xtensa-esp32-elf-" if TARGET_PLATFORM_ESP32
+    default "xtensa-lx106-elf-" if TARGET_PLATFORM_ESP8266
     help
         The prefix/path that is used to call the toolchain. The default setting assumes
         a crosstool-ng gcc setup that is in your PATH.

components/bootloader/Kconfig.projbuild

@@ -32,7 +32,7 @@ config BOOTLOADER_SPI_WP_PIN
     int "SPI Flash WP Pin when customising pins via efuse (read help)"
     range 0 33
     default 7
-    depends on FLASHMODE_QIO || FLASHMODE_QOUT
+    depends on (FLASHMODE_QIO || FLASHMODE_QOUT) && TARGET_PLATFORM_ESP32
     help
         This value is ignored unless flash mode is set to QIO or QOUT *and* the SPI flash pins have been
         overriden by setting the efuses SPI_PAD_CONFIG_xxx.
@@ -46,6 +46,7 @@ config BOOTLOADER_SPI_WP_PIN
 choice BOOTLOADER_VDDSDIO_BOOST
     bool "VDDSDIO LDO voltage"
     default BOOTLOADER_VDDSDIO_BOOST_1_9V
+    depends on TARGET_PLATFORM_ESP32
     help
         If this option is enabled, and VDDSDIO LDO is set to 1.8V (using EFUSE
         or MTDI bootstrapping pin), bootloader will change LDO settings to
@@ -57,7 +58,7 @@ choice BOOTLOADER_VDDSDIO_BOOST
 
 config BOOTLOADER_VDDSDIO_BOOST_1_8V
     bool "1.8V"
-    depends on !ESPTOOLPY_FLASHFREQ_80M
+    depends on !ESPTOOLPY_FLASHFREQ_80M && TARGET_PLATFORM_ESP32
 config BOOTLOADER_VDDSDIO_BOOST_1_9V
     bool "1.9V"
 endchoice
@@ -65,6 +66,7 @@ endchoice
 config BOOTLOADER_FACTORY_RESET
     bool "GPIO triggers factory reset"
     default N
+    depends on TARGET_PLATFORM_ESP32
     help
         Allows to reset the device to factory settings:
         - clear one or more data partitions;
@@ -74,7 +76,7 @@ config BOOTLOADER_FACTORY_RESET
 
 config BOOTLOADER_NUM_PIN_FACTORY_RESET
     int "Number of the GPIO input for factory reset"
-    depends on BOOTLOADER_FACTORY_RESET
+    depends on BOOTLOADER_FACTORY_RESET && TARGET_PLATFORM_ESP32
     range 0 39
     default 4
     help
@@ -102,6 +104,7 @@ config BOOTLOADER_DATA_FACTORY_RESET
 config BOOTLOADER_APP_TEST
     bool "GPIO triggers boot from test app partition"
     default N
+    depends on TARGET_PLATFORM_ESP32
     help
         Allows to run the test app from "TEST" partition.
         A boot from "test" partition will occur if there is a GPIO input pulled low while device starts up.
@@ -131,6 +134,7 @@ endmenu  # Bootloader
 
 
 menu "Security features"
+    depends on TARGET_PLATFORM_ESP32
 
 config SECURE_BOOT_ENABLED
     bool "Enable secure boot in bootloader (READ DOCS FIRST)"