squashfs: update site to git.kernel.org

squashfs-tools development has been moved to git.kernel.org from
Sourceforge.

The hash was selected to fix a threading issue observed when
creating images on a build machine with at least 64 cores.
(Fixes random corrupted images that would fail to boot)

Signed-off-by: Atul Singh <atul.singh.mandla@rockwellcollins.com>
Signed-off-by: Matt Weber <matthew.weber@rockwellcollins.com>
[Thomas: use https:// instead of git://.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/squashfs/squashfs.hash

@@ -1,2 +1,2 @@
-# Locally computed:
-sha256  0d605512437b1eb800b4736791559295ee5f60177e102e4d4ccd0ee241a5f3f6  squashfs4.3.tar.gz
+# Locally computed
+sha256	e807202ab4dcfeea214df49d3a728b9a85644a7e7262fc6fcd875a0def99d4ed	squashfs-9c1db6d13a51a2e009f0027ef336ce03624eac0d.tar.gz

package/squashfs/squashfs.mk

@@ -4,9 +4,9 @@
 #
 ################################################################################
 
-SQUASHFS_VERSION = 4.3
-SQUASHFS_SOURCE = squashfs$(SQUASHFS_VERSION).tar.gz
-SQUASHFS_SITE = http://downloads.sourceforge.net/project/squashfs/squashfs/squashfs$(SQUASHFS_VERSION)
+SQUASHFS_VERSION = 9c1db6d13a51a2e009f0027ef336ce03624eac0d
+SQUASHFS_SITE = https://git.kernel.org/pub/scm/fs/squashfs/squashfs-tools.git
+SQUASHFS_SITE_METHOD = git
 SQUASHFS_LICENSE = GPLv2+
 SQUASHFS_LICENSE_FILES = COPYING
 SQUASHFS_MAKE_ARGS = XATTR_SUPPORT=1