libgphoto2: update package 2.5.21

Signed-off-by: Leonardo Medici <leonardo_medici@me.com>

libs/libgphoto2/Makefile

@@ -9,14 +9,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libgphoto2
-PKG_VERSION:=2.5.19
+PKG_VERSION:=2.5.21
 PKG_RELEASE:=1
 PORT_VERSION:=0.12.0
 PKG_MAINTAINER:=Leonardo Medici <leonardo_medici@me.com>
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=@SF/gphoto
-PKG_HASH:=62523e52e3b8542301e072635b518387f2bd0948347775cf10cb2da9a6612c63
+PKG_HASH:=c5572b1a52af32a40ca6a014682f7548bfb58d47109ad77fba29ec295b448bb1
 PKG_LICENSE:=LGPL-2.1
 PKG_LICENSE_FILES:=COPYING