esoc: Add support for SDX50

Add basic operations to support sdx50 in esoc driver that includes
compatibility, initializations and power control operations (reset,
shutdown, and so on).

Change-Id: Ia53a128b0259d0fc7680bc9452ceaead7b286ca8
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>