MAINTAINERS: add Danilo as FIRMWARE LOADER maintainer

Add myself as firmware loader maintainer, as suggested by Luis in [1].

CC: Luis Chamberlain <[email protected]>
CC: Russ Weight <[email protected]>
CC: Greg Kroah-Hartman <[email protected]>
Link: https://lore.kernel.org/rust-for-linux/[email protected]/ [1]
Suggested-by: Luis Chamberlain <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: dakr

MAINTAINERS

@@ -8569,6 +8569,7 @@ F:	include/linux/arm_ffa.h
 FIRMWARE LOADER (request_firmware)
 M:	Luis Chamberlain <[email protected]>
 M:	Russ Weight <[email protected]>
+M:	Danilo Krummrich <[email protected]>
 L:	[email protected]
 S:	Maintained
 F:	Documentation/firmware_class/