dra7xx.xml: build using buildroot

Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
Change-Id: I8c8f7ba7c7999a4838df160b6e44f2bdf75a1001
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

dra7xx.xml

@@ -14,11 +14,10 @@
         </project>
 
         <!-- linaro-swg gits -->
-        <project path="gen_rootfs"     name="linaro-swg/gen_rootfs.git"           revision="d5429c154fb81fdae75886d505c385b2f0bb7153" />
         <project path="optee_examples" name="linaro-swg/optee_examples.git"       revision="master" />
 
         <!-- Misc gits -->
-        <project path="busybox"        name="mirror/busybox.git"                  revision="refs/tags/1_24_0" clone-depth="1" />
+        <project path="buildroot"      name="buildroot/buildroot.git"             revision="62dca337fe72085d98b7603cfcff1279c48ba7d9" />
         <project path="linux"          name="ti-linux-kernel/ti-linux-kernel.git" revision="00a3beacce33dc14fa301eb5f3fb5a341212e9b4" remote="ti" />
         <project path="u-boot"         name="ti-u-boot/ti-u-boot.git"             revision="c68ed086bd00054e28c46e033385f79104c3f84c" remote="ti" />
 </manifest>