[meta-oe][PATCH] libvpx: bump to 1.7.0

["S. Lockwood-Childs" <sjl@vctlabs.com>]

Fetch was switched from tarball to git fetcher with release tag because
libvpx-1.7.0.tar.bz2 was not available at the previous download URL.

The download instructions for the project point to autogenerated
tarballs now (instead of storage.googleapis.com) [1], but archive
tarballs generated by git can end up with checksums that change
over time... so using git directly is less likely to break.

Successfully compile tested against: 
* ffmpeg-4.0.2
* gstreamer1.0-plugins-good-1.14.2
* vlc-2.2.2 
with vpx enabled in each respective PACKAGECONFIG.

[1] https://www.webmproject.org/code/releases/

Signed-off-by: S. Lockwood-Childs <sjl@vctlabs.com>
---
 .../recipes-multimedia/webm/{libvpx_1.6.1.bb => libvpx_1.7.0.bb}  | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
 rename meta-oe/recipes-multimedia/webm/{libvpx_1.6.1.bb => libvpx_1.7.0.bb} (83%)

diff --git a/meta-oe/recipes-multimedia/webm/libvpx_1.6.1.bb b/meta-oe/recipes-multimedia/webm/libvpx_1.7.0.bb
similarity index 83%
rename from meta-oe/recipes-multimedia/webm/libvpx_1.6.1.bb
rename to meta-oe/recipes-multimedia/webm/libvpx_1.7.0.bb
index e17cda1..1d04ed1 100644
--- a/meta-oe/recipes-multimedia/webm/libvpx_1.6.1.bb
+++ b/meta-oe/recipes-multimedia/webm/libvpx_1.7.0.bb
@@ -7,11 +7,13 @@ LICENSE = "BSD"
 
 LIC_FILES_CHKSUM = "file://LICENSE;md5=d5b04755015be901744a78cc30d390d4"
 
-SRC_URI += "http://storage.googleapis.com/downloads.webmproject.org/releases/webm/${BP}.tar.bz2 \
+# SRCREV for 1.7.0
+SRCREV = "133f83e2c34b8d770ae06aa595cef3e254173fcb"
+SRC_URI += "git://chromium.googlesource.com/webm/libvpx;protocol=https \
             file://libvpx-configure-support-blank-prefix.patch \
            "
-SRC_URI[md5sum] = "a19518c8111fa93bdabdd85259162611"
-SRC_URI[sha256sum] = "1c2c0c2a97fba9474943be34ee39337dee756780fc12870ba1dc68372586a819"
+
+S = "${WORKDIR}/git"
 
 # ffmpeg links with this and fails
 # sysroots/armv4t-oe-linux-gnueabi/usr/lib/libvpx.a(vpx_encoder.c.o)(.text+0xc4): unresolvable R_ARM_THM_CALL relocation against symbol `memcpy@@GLIBC_2.4'
-- 
2.7.4