esoc: Add support for sdxprairie

Add basic operations to support sdxprairie in esoc driver that includes
compatibility, initializations and power control operations (reset,
shutdown, and so on). Most of the configurations are leveraged from
the existing sdx50 configurations.

Change-Id: Ide75e2f2efeac0767c1ecd760bda7e455ab527dc
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>