Bump the U-Boot version number.

Change-Id: I3b46e6dd0aeb3a0031545a31daea56d71aa195f5
diff --git a/Makefile b/Makefile
index ecbec75..a700c43 100644
--- a/Makefile
+++ b/Makefile
@@ -4,8 +4,8 @@
 
 VERSION = 2017
 PATCHLEVEL = 03
-SUBLEVEL = 1
-EXTRAVERSION =
+SUBLEVEL = 2
+EXTRAVERSION = 
 NAME =
 
 # *DOCUMENTATION*