Makefile: add an install target

Signed-off-by: Nicolas Dechesne <[email protected]>

Author: ndechesne

Makefile

@@ -1,5 +1,7 @@
 TOPDIR := $(PWD)
 PLATFORMS := $(foreach platform,$(wildcard platforms/*),$(platform)/gpt)
+BINS := gen_partition.py msp.py ptool.py
+PREFIX ?= /usr/local
 
 .PHONY: all
 
@@ -15,3 +17,6 @@ check:
 	# W605: invalid escape sequence
 	pycodestyle --select=W605 *.py
 
+install: $(BINS)
+	install -d $(DESTDIR)$(PREFIX)/bin
+	install -m 755 $^ $(DESTDIR)$(PREFIX)/bin