dt-bindings: fpga: replace Ivan Bornyakov maintainership

dt-bindings: fpga: replace Ivan Bornyakov maintainership

As I'm leaving Metrotek, hand over Lattice Slave SPI sysCONFIG FPGA
manager and Microchip Polarfire FPGA manager maintainership duties to
Vladimir.

Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Vladimir Georgiev <v.georgiev@metrotek.ru>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230429104838.5064-3-i.bornyakov@metrotek.ru
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20230530134936.634370-3-yilun.xu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>