package/volk: bump to version 3.1.2

For release notes since v3.0.0, see:
https://www.libvolk.org/release-v310.html
https://www.libvolk.org/release-v311.html
https://www.libvolk.org/release-v312.html

Fixes:
http://autobuild.buildroot.org/results/82cb35e9be6a57539d4e370ab2c4a4fae9d8b5d8/

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/volk/volk.hash

@@ -1,3 +1,3 @@
 # Locally computed
-sha256  88fd80638a3683f23a8cae6c551a8cfe9ea55735c701846f3eeeeeea8a14f6a3  volk-3.0.0.tar.xz
+sha256  ce62f645c2ee3ef8b38f923de78ef4df9a1b7696d618f57781955803ee29bab3  volk-3.1.2.tar.xz
 sha256  e3a994d82e644b03a792a930f574002658412f62407f5fee083f2555c5f23118  COPYING

package/volk/volk.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-VOLK_VERSION = 3.0.0
+VOLK_VERSION = 3.1.2
 VOLK_SITE = https://github.com/gnuradio/volk/releases/download/v$(VOLK_VERSION)
 VOLK_SOURCE = volk-$(VOLK_VERSION).tar.xz
 VOLK_LICENSE = LGPL-3.0+