mmc: sdhci-msm: dump cmdq debug ram only for command queue host

Currently we are printing the cmdq debug ram contents during the
error handling but this code path shouldn't be executed for non cmdq
hosts.

Change-Id: Ic397e4378c290b604037e69b7df58200810e981c
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>