Turn on USB OTG and increase kernel log ring buffer size

CONFIG_HIGH_RES_TIMERS=y

CONFIG_IKCONFIG=y

CONFIG_IKCONFIG_PROC=y

CONFIG_LOG_BUF_SHIFT=20

CONFIG_LOG_BUF_SHIFT=21

CONFIG_CGROUPS=y

CONFIG_CGROUP_DEBUG=y

CONFIG_CGROUP_FREEZER=y

CONFIG_USB=y

CONFIG_USB_DEBUG=y

CONFIG_USB_ANNOUNCE_NEW_DEVICES=y

CONFIG_USB_OTG=y

# CONFIG_USB_OTG_WHITELIST is not set

CONFIG_USB_XHCI_HCD=y

CONFIG_USB_EHCI_HCD=y

CONFIG_USB_EHCI_S5P=y