gst-devtools: upgrade 1.24.12 -> 1.26.0

Disable new meson option dots_viewer

(From OE-Core rev: fb6b099ada342d228df9eccffe9980525605f1d9)

Signed-off-by: Lei Maohui <leimaohui@fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-multimedia/gstreamer/gst-devtools/0001-connect-has-a-different-signature-on-musl.patch

@@ -1,4 +1,4 @@
-From 67809420230cd4fcc63069f78efdc90c7b4c4ee1 Mon Sep 17 00:00:00 2001
+From 9ed608c901955b0906aac102d5d7ab06accee60e Mon Sep 17 00:00:00 2001
 From: Khem Raj <raj.khem@gmail.com>
 Date: Sun, 9 Sep 2018 17:38:10 -0700
 Subject: [PATCH] connect has a different signature on musl

meta/recipes-multimedia/gstreamer/gst-devtools_1.26.0.bb

@@ -12,7 +12,7 @@ SRC_URI = "https://gstreamer.freedesktop.org/src/gst-devtools/gst-devtools-${PV}
            file://0001-connect-has-a-different-signature-on-musl.patch \
            "
 
-SRC_URI[sha256sum] = "4ef3dd12e5827068d6db7ad01876d1216a80717116c24a0d5b3b57fd7e3c3478"
+SRC_URI[sha256sum] = "eff33d7dc292bb074a2788ea887b6283398ffdefafa49fb7d08efe6658a65648"
 
 DEPENDS = "json-glib glib-2.0 glib-2.0-native gstreamer1.0 gstreamer1.0-plugins-base"
 RRECOMMENDS:${PN} = "git"
@@ -37,6 +37,7 @@ EXTRA_OEMESON += " \
     -Ddoc=disabled \
     -Ddebug_viewer=disabled \
     -Dtests=disabled \
+    -Ddots_viewer=disabled \
     -Dvalidate=enabled \
     ${@gettext_oemeson(d)} \
 "