usb: dwc2: Move UTMI_PHY_DATA defines closer

Makes GHWCFG4_UTMI_PHY_DATA* defines closer to their relative shift and
mask defines to improve readability.

Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Jules Maselbas <jmaselbas@kalray.eu>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>