Revert "mmc: sdhci-msm: Disable SD Card's Clock Scaling"

This reverts commit e64d0071.
The reason for sqaushing reverts is, they are many changes
which are difficult to manage. And have reverted as these changes
are added only on top of SDCard porting.
To add eMMC support, need to revert these and then add these in
eMMC and SDCard porting changes together.

Revert "mmc: sdhci-msm: Fix issue with 1.8v switch sequence"
This reverts commit abe24b0a.

Revert "mmc: sdhci-msm: No need to free-up dll-hsr table"
This reverts commit e9af2589.

Revert "mmc: sdhci-msm: Support for getting DLL HSR values from dt file"
This reverts commit 0c2baf44.

Revert "mmc: core: Fix error when SD card is removed"
This reverts commit 6bdf4fce.

Revert "mmc: Fix compile warnings"
This reverts commit 3850cd39.

Revert "mmc: core: Use freq table with devfreq"
This reverts commit 6a56af62.

All above commits were added before porting which are now part of
ported gerrits.

Change-Id: I8239708190195d1a7256f160320ae6487973766d
Signed-off-by: Ram Prakash Gupta <rampraka@codeaurora.org>