i.MX 6UltraLite and i.MX 7Dual SabreSD beta were released
on a different branch so specify SRCBRANCH and SRCREV by SoC.
Remove file://0003-ARM-imx6sl-Disable-imx6sl-specific-code-when-imx6sl-.patch
as it no longer applies with this kernel version
Keep 6QP_beta branch only for the 6q/dl/sx/sl SoC since
some patches in 6qp_beta are not in the 6ul7d_beta for QuadPlus only.
The 6ul7d_beta had no graphics and video acceleration testing.
Signed-off-by: Lauren Post <lauren.post@freescale.com> Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>