Do not use __qcom_scm_is_call_available in atomic context

__qcom_scm_is_call_available() should be used in the non-atomic
context, so fix the couple of wrapper functions which are using
__qcom_scm_is_call_available in atomic context.

Change-Id: I2c205a68ed2d6c317ccb43b90dd4cbc821eeeab5
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>