Add missing {build.upload_flags}

Signed-off-by: Frederic.Pillon <[email protected]>

Author: fpistm

boards.txt

@@ -386,7 +386,7 @@ Other.pid.0=0x5711
 
 Other.build.core=arduino
 Other.build.board=Other
-Other.build.extra_flags=-D{build.product_line} {build.enable_usb} {build.enable_Serialx}
+Other.build.extra_flags=-D{build.product_line} {build.enable_usb} {build.enable_Serialx} {build.upload_flags}
 
 # BLUEPILL_F103C8 board
 # Support: USB HID, Serial2 (USART2 on PA3, PA2) and Serial3 (USART3 on PB11, PB10)

platform.txt

@@ -88,6 +88,7 @@ build.opt.path={build.path}/sketch/{build.opt.name}
 recipe.hooks.prebuild.1.pattern.windows=cmd /c "if not exist {build.opt.sourcepath} mkdir {build.path}\sketch & type NUL > {build.opt.path}"
 recipe.hooks.prebuild.1.pattern.linux=bash -c "[ -f {build.opt.sourcepath} ] || (mkdir -p {build.path}/sketch && touch {build.opt.path})"
 recipe.hooks.prebuild.1.pattern.macosx=bash -c "[ -f {build.opt.sourcepath} ] || (mkdir -p {build.path}/sketch && touch {build.opt.path})"
+build.upload_flags=
 
 # compile patterns
 # ---------------------