pio update - flash size of non-standard boards

* adding missing flash size flags that were lost between 0.14 and 0.15
   (necessary if you don't flash using esptool)
* adding env:esp32dev_16M for 16MB flash (serg74 esp32-16M, twilightlord esp32 16M)

platformio.ini

@@ -430,7 +430,26 @@ lib_deps = ${esp32_idf_V4.lib_deps}
   ${esp32.AR_lib_deps}
 monitor_filters = esp32_exception_decoder
 board_build.partitions = ${esp32.large_partitions}
+board_upload.flash_size = 8MB
+board_upload.maximum_size = 8388608
 ; board_build.f_flash = 80000000L
+; board_build.flash_mode = qio
+
+[env:esp32dev_16M]
+board = esp32dev
+platform = ${esp32_idf_V4.platform}
+platform_packages = ${esp32_idf_V4.platform_packages}
+build_unflags = ${common.build_unflags}
+build_flags = ${common.build_flags} ${esp32_idf_V4.build_flags} -D WLED_RELEASE_NAME=ESP32_16M #-D WLED_DISABLE_BROWNOUT_DET
+  ${esp32.AR_build_flags}
+lib_deps = ${esp32_idf_V4.lib_deps}
+  ${esp32.AR_lib_deps}
+monitor_filters = esp32_exception_decoder
+board_build.partitions = ${esp32.extreme_partitions}
+board_upload.flash_size = 16MB
+board_upload.maximum_size = 16777216
+board_build.f_flash = 80000000L
+board_build.flash_mode = dio
 
 ;[env:esp32dev_audioreactive]
 ;board = esp32dev
@@ -508,6 +527,8 @@ build_flags = ${common.build_flags} ${esp32s3.build_flags} -D WLED_RELEASE_NAME=
 lib_deps = ${esp32s3.lib_deps}
   ${esp32.AR_lib_deps}
 board_build.partitions = ${esp32.extreme_partitions}
+board_upload.flash_size = 16MB
+board_upload.maximum_size = 16777216
 board_build.f_flash = 80000000L
 board_build.flash_mode = qio
 monitor_filters = esp32_exception_decoder

platformio_override.sample.ini

@@ -359,6 +359,8 @@ upload_speed = 115200
 lib_deps = ${esp32c3.lib_deps}
 board_build.partitions = tools/WLED_ESP32_2MB_noOTA.csv
 board_build.flash_mode = dio
+board_upload.flash_size = 2MB
+board_upload.maximum_size = 2097152
 
 [env:wemos_shield_esp32]
 board = esp32dev