soc: qcom: scm: Correct the type of the scm_version_mask

scm_version_mask is declared as a bool, and truncates
any mask assigned to it to either '1' or '0'. Switch its
type to u32. This will only affect chipsets that use
the SMC64 interface.

Change-Id: Id95bd01d45fa7ea5453e8eafee2c0c8f65cd95d4
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>