msm: mpq8064: Boardfile configuration to enable vcap

This change is really doing 2 things. It is adding a vcap device
and it is fixing up compile errors.

All board related code about adding the msm_vcap is enclosed in
CONFIG_MSM_VCAP define. By default this define is not enabled.
When someone wants to enable the MSM_VCAP they need to enable
CONFIG_MSM_VCAP, but it is also recommend to disable
CONFIG_MMC_MSM_SDC3_SUPPORT when someone want so enable vcap.
When CONFIG_MMC_MSM_SDC3_SUPPORT is no longer defined there is
a compiler warning saying that a static table was declared but
no longer used.

Change-Id: I89c24bef9b40c2ab1aca28ab6784308da290de45
Signed-off-by: Terence Hampson <thampson@codeaurora.org>