phy: rockchip-emmc: reindent the register definitions

Some of the spacing was wrong (spaces instead of tabs), and due to
longer entries added later, the columns weren't aligned. Let's get
everything consistent.
Signed-off-by: NBrian Norris <briannorris@chromium.org>
Signed-off-by: NDouglas Anderson <dianders@chromium.org>
Acked-by: NKishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>