cc3200: Add targets to erase flash, deploy firmware using cc3200tool.

cc3200tool, https://github.com/ALLTERCO/cc3200tool is a (mostly, some
binary blobs present) open-source, Linux-friendly tool to flash a cc3200
devices. It's an alternative to fully proprietary, Windows-only Uniflash
from TI.

The provided make targets are for erasing flash, flashing the uPy
bootloader and firmware, and flashing vendor's WiFi firmware "servicepacks"
(the latter needs to be downloaded from vendor side, a link is present
inside Makefile).

cc3200/Makefile

@@ -8,6 +8,9 @@ endif
 # Make 'release' the default build type
 BTYPE ?= release
 
+# Port for flashing firmware
+PORT ?= /dev/ttyUSB1
+
 # If the build directory is not given, make it reflect the board name.
 BUILD ?= build/$(BOARD)/$(BTYPE)
 
@@ -23,6 +26,9 @@ CFLAGS += -Iboards/$(BOARD)
 
 LDFLAGS = -Wl,-nostdlib -Wl,--gc-sections -Wl,-Map=$@.map
 
+FLASH_SIZE_WIPY = 2M
+FLASH_SIZE_LAUNCHXL = 1M
+
 ifeq ($(BTARGET), application)
 # qstr definitions (must come before including py.mk)
 QSTR_DEFS = qstrdefsport.h $(BUILD)/pins_qstr.h
@@ -39,3 +45,18 @@ endif
 
 # always include MicroPython make rules
 include ../py/mkrules.mk
+
+erase:
+	cc3200tool -p $(PORT) format_flash --size $(FLASH_SIZE_$(BOARD))
+
+deploy:
+	cc3200tool -p $(PORT) \
+	    write_file bootmgr/build/$(BOARD)/$(BTYPE)/bootloader.bin /sys/mcuimg.bin \
+	    write_file build/$(BOARD)/$(BTYPE)/mcuimg.bin /sys/factimg.bin
+
+# Files *.ucf and *ucf.signed.bin come from CC3200SDK-SERVICEPACK
+# package from http://www.ti.com/tool/cc3200sdk
+servicepack:
+	cc3200tool -p $(PORT) \
+	write_file --file-size=0x20000 --signature ota_1.0.1.6-2.7.0.0.ucf.signed.bin \
+	    ota_1.0.1.6-2.7.0.0.ucf /sys/servicepack.ucf