mach-exynos: UNIVERSAL5410 MMC: Enable SDR104, double bus bandwidth

Enable SDR104 UHS SD card modes and double the controller's bus bandwidth to 160MHz.

Tested on various SD cards and max read jumps from ~35mB/s to +70mB/s.
Revert "fs: ext4: Remove some lines for debugging"

This reverts commit ead9775cff179ca2cefd30d6609b800ec22a0e78.
fs: ext4: Remove some lines for debugging
Recommit with some revert