git: security bump to version 2.2.1

Fixes:
CVE-2014-9390 - arbitrary command execution vulnerability on
case-insensitive file systems.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/git/git.hash

@@ -1,2 +1,2 @@
 # From: https://www.kernel.org/pub/software/scm/git/sha256sums.asc
-sha256  3b87774672bbf35b4d33991dc5119d4eff47c3679e27185312a2b8b36fdad314  git-2.2.0.tar.xz
+sha256  09422dc9a0bdddf6bdd5b8634c71e1ed3125256c47424e6a2687701e764ef450  git-2.2.1.tar.xz

package/git/git.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GIT_VERSION = 2.2.0
+GIT_VERSION = 2.2.1
 GIT_SOURCE = git-$(GIT_VERSION).tar.xz
 GIT_SITE = https://www.kernel.org/pub/software/scm/git
 GIT_LICENSE = GPLv2 LGPLv2.1+