package/am33x-cm3: switch upstream

The upstream host, arago-project.org, has vanished, bringing down the
git repository with it.

Switch to another, github-hosted repository, that has the commit we're
interested in.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>

package/am33x-cm3/am33x-cm3.mk

@@ -6,7 +6,7 @@
 
 # This should correpsond to v05.00.00.02
 AM33X_CM3_VERSION = 11107db2f1e9e58ee75d4fe9cc38423c9a6e4365
-AM33X_CM3_SITE = http://arago-project.org/git/projects/am33x-cm3.git
+AM33X_CM3_SITE = https://github.com/RobertCNelson/am33x-cm3
 AM33X_CM3_SITE_METHOD = git
 AM33X_CM3_LICENSE = TI Publicly Available Software License
 AM33X_CM3_LICENSE_FILES = License.txt