Revert "ARM: imx6q: drop of_platform_default_populate() from init_machine"

This reverts commit cc8870bf.

Since commit cc8870bf ("ARM: imx6q: drop of_platform_default_populate()
from init_machine") the following errors are seen on boot:

[    0.123372] imx6q_suspend_init: failed to find ocram device!
[    0.123537] imx6_pm_common_init: No DDR LPM support with suspend -19!

, which break suspend/resume on imx6q/dl.

Revert the offeding commit to avoid the regression.

Thanks to Tim Harvey for bisecting this problem.

Cc: stable@vger.kernel.org
Fixes: cc8870bf ("ARM: imx6q: drop of_platform_default_populate() from  init_machine")
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/mach-imx/mach-imx6q.c

@@ -172,6 +172,9 @@ static void __init imx6q_init_machine(void)
 				imx_get_soc_revision());
 
 	imx6q_enet_phy_init();
+
+	of_platform_default_populate(NULL, NULL, NULL);
+
 	imx_anatop_init();
 	cpu_is_imx6q() ?  imx6q_pm_init() : imx6dl_pm_init();
 	imx6q_1588_init();