intel: Add support for RPLP

Add RPLP platform support and PCIIDs

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@intel.com>
Signed-off-by: Raviteja Goud Talla <ravitejax.goud.talla@intel.com>