ARM: dts: dra76x: Update MMC2_HS200_MANUAL1 iodelay values

Update the MMC2_HS200_MANUAL1 iodelay values to match with the latest
dra76x data manual[1].

Also this particular pinctrl-array is using spaces instead of tabs for
spacing between the values and the comments. Fix this as well.

[1] http://www.ti.com/lit/ds/symlink/dra76p.pdf



Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>