mmc: msm_sdcc: read all response registers only if required

In current code, all 4 response registers MCI_RESPn (n=[0..3])
are read for every command. Ideally, only MCI_RESP0 must be read
for short type (32-bit) and all 4 registers for long type (136-bit)
response. This patch fixes this by reading response registers based
on response type.

Change-Id: I7af326be16a42b8b4de7d3413f67e23fe8c68875
Reported-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>