gflags: bump to version v2.2.0

Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gflags/gflags.hash

@@ -1,2 +1,2 @@
 # Locally computed
-sha256	d8331bd0f7367c8afd5fcb5f5e85e96868a00fd24b7276fa5fcee1e5575c2662	gflags-v2.1.2.tar.gz
+sha256	466c36c6508a451734e4f4d76825cf9cd9b8716d2b70ef36479ae40f08271f88	gflags-v2.2.0.tar.gz

package/gflags/gflags.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GFLAGS_VERSION = v2.1.2
+GFLAGS_VERSION = v2.2.0
 GFLAGS_SITE = $(call github,gflags,gflags,$(GFLAGS_VERSION))
 GFLAGS_INSTALL_STAGING = YES
 GFLAGS_LICENSE = BSD-3c