libgcrypt: security bump to version 1.5.3

Fixes CVE-2013-4242.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libgcrypt/libgcrypt.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBGCRYPT_VERSION = 1.5.2
+LIBGCRYPT_VERSION = 1.5.3
 LIBGCRYPT_SOURCE = libgcrypt-$(LIBGCRYPT_VERSION).tar.bz2
 LIBGCRYPT_LICENSE = LGPLv2.1+
 LIBGCRYPT_LICENSE_FILES = COPYING.LIB