board: 8064: storage: increase active drive strength for SDC3 slot

SDC3 slot is used to interface external SD card but we have seen
DATA/CMD CRC errors with few cards especially on CDPs. Currently
internal pad drive strength for DATA/CMD/CLK line is 8mA and we
are not seeing the DATA/CMD CRC errors if drive strength is set
to 10mA.

This change increases the DATA/CMD/CLK line internal drive strength
to 10mA for CDP platform.

CRs-Fixed: 376068
Change-Id: I34ecd868529d0039bde4471cd67efe2c8d1fb6d1
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>