mmc: sdhci-msm: Add show function for M&M sysfs

Add a dummy function for sysfs show attribute of mask and
match feature to avoid warning.

Change-Id: Icfe6e50dbea0a00005131fb03bca09f4dae2371b
Signed-off-by: Ram Prakash Gupta <rampraka@codeaurora.org>
1 file changed