Add Flex config in Makefile

Author: cedelavergne-ledger

standard_plugin.mk

@@ -33,8 +33,9 @@ ICON_NANOS = icons/nanos_app_$(NORMAL_NAME).gif
 ICON_NANOX = icons/nanox_app_$(NORMAL_NAME).gif
 ICON_NANOSP = $(ICON_NANOX)
 ICON_STAX = icons/stax_app_$(NORMAL_NAME).gif
+ICON_FLEX = icons/flex_app_$(NORMAL_NAME).gif
 
-ifeq ($(TARGET_NAME),TARGET_STAX)
+ifeq ($(TARGET_NAME),$(filter $(TARGET_NAME),TARGET_STAX TARGET_FLEX))
     DEFINES += ICONGLYPH=C_stax_$(NORMAL_NAME)_64px
     DEFINES += ICONBITMAP=C_stax_$(NORMAL_NAME)_64px_bitmap
 endif