EDAC/socfpga: Transfer SoCFPGA EDAC maintainership

Thor Thayer is leaving Intel and will no longer be able to maintain the
EDAC for SoCFPGA driver, thus transfer maintainership to Dinh Nguyen.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Thor Thayer <thor.thayer@linux.intel.com>
Link: https://lkml.kernel.org/r/20200729174511.4256-1-dinguyen@kernel.org