mmc: host: add pad and tlmm configuration

This patch adds the pad and tlmm configuration to msm-sdhci
driver.

Change-Id: Ic2b9beffdb555598bdc15b4b03c8adb78fbd0c2c
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>