go: bump to 1.7.2

Signed-off-by: Christian Stewart <christian@paral.in>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/go/go.hash

@@ -1,2 +1,2 @@
 # Locally computed:
-sha256 787b0b750d037016a30c6ed05a8a70a91b2e9db4bd9b1a2453aa502a63f1bccc   go1.6.2.src.tar.gz
+sha256 ce4f331352313ad7ba9db5daf6f7f81581f3ca9c862d272ae02ee5a3cb294023  go1.7.2.src.tar.gz

package/go/go.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GO_VERSION = 1.6.2
+GO_VERSION = 1.7.2
 GO_SITE = https://storage.googleapis.com/golang
 GO_SOURCE = go$(GO_VERSION).src.tar.gz