fix upload process in makefile for non-official opendeck boards
fix upload process in makefile for non-official opendeck boards

commit 35de5d3070d7e46c41ff05635886fc03e241aa3d introduced checking of
TARGETNAME variable in makefile instead of MAKECMDGOALS and it broke
upload process for every non-official opendeck board

this part in makefile was never executed as an result:

else ifeq ($(findstring upload,$(TARGETNAME)), upload)

because of this, when performing upload, constants for atmega32u4 board
have been used for every board upload target has been called

paradajz/OpenDeck,paradajz/OpenDeck,paradajz/OpenDeck,paradajz/OpenDeck,paradajz/OpenDeck,paradajz/OpenDeck