Fix sparse warning:
  warning: symbol 'gpmc_cs_get_name' was not declared. Should it be static?
Signed-off-by: NSemen Protsenko <semen.protsenko@globallogic.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRoger Quadros <rogerq@ti.com>