soc: qcom: Use scm_is_secure_device() API to find secure boot or not

Currently gladiator error reporting driver is independently
checking whether device in secure boot or not. So use
generic API scm_is_secure_device() and take appropriate
decision to enable certain features.

Change-Id: I89a7bdd21373ffcfec6d90ffbdd29ce8ed3dde88
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>