defconfig: Support for SSG HLOS drivers

Enable QRNG and smcinvoke driver config.
Also enable the following flags for variant ops,
needed to enable QTI inline encryption.
1. CONFIG_SCSI_UFS_CRYPTO_QTI.
2. CONFIG_QTI_CRYPTO_COMMON.
3. CONFIG_QTI_HW_KEY_MANAGER.

Change-Id: I08c1539fed6afb06985e11271a6780dd835124b8
Signed-off-by: Vaibhav Agrawal <vagrawa@codeaurora.org>