usb: chipidea: Reallocate regmap only if lpm is detected

The regmap only needs to reallocate if the hw_read on the CAP register shows
lpm is used. Therefore the if() statement check the change.

Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
usb: chipidea: imx: avoid unnecessary probe defer every time

The ci_hdrc_imx's probe needs usbmisc_imx to be loadded beforehand,
so it is better we load usbmisc_imx first.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
usb: chipidea: usbmisc: Add support for i.MX27/i.MX31 CPUs

This adds i.MX27 and i.MX31 as the next user of the usbmisc driver.

Tested-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
usb: chipidea: usbmisc: Add support for i.MX51 CPU

This adds i.MX51 as the next user of the usbmisc driver.
Functionality is similar to i.MX53, so at this stage simply
reuse existing i.MX53 calls.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Peter Chen <peter.chen@freescale.com>