[source] imx6: fix USB for 4.9 kernel

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/4cc70d86108a9bd491aa7abfecfc81759cc78c1c

commit 4cc70d86108a9bd491aa7abfecfc81759cc78c1c
Author: Tim Harvey <tharvey at gateworks.com>
AuthorDate: Thu Mar 9 16:04:58 2017 -0800

    imx6: fix USB for 4.9 kernel
    
    Signed-off-by: Tim Harvey <tharvey at gateworks.com>
---
 target/linux/imx6/config-4.9 | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/target/linux/imx6/config-4.9 b/target/linux/imx6/config-4.9
index 7e569bd..9aafa50 100644
--- a/target/linux/imx6/config-4.9
+++ b/target/linux/imx6/config-4.9
@@ -403,6 +403,11 @@ CONFIG_PINCTRL_IMX6UL=y
 # CONFIG_PL310_ERRATA_727915 is not set
 # CONFIG_PL310_ERRATA_753970 is not set
 CONFIG_PL310_ERRATA_769419=y
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+# CONFIG_PM_DEBUG is not set
+CONFIG_PM_GENERIC_DOMAINS=y
+CONFIG_PM_GENERIC_DOMAINS_OF=y
 CONFIG_PM_OPP=y
 CONFIG_PPS=y
 # CONFIG_PROBE_EVENTS is not set
@@ -501,6 +506,9 @@ CONFIG_USB_EHCI_PCI=y
 # CONFIG_USB_ETH is not set
 CONFIG_USB_GADGET=y
 # CONFIG_USB_IMX21_HCD is not set
+CONFIG_USB_MXS_PHY=y
+CONFIG_USB_OTG=y
+CONFIG_USB_PHY=y
 CONFIG_USB_SUPPORT=y
 # CONFIG_USB_UHCI_HCD is not set
 CONFIG_USE_OF=y