MAINTAINERS: Add mailing list for the interconnect API

Add a mailing list for patch reviews and discussions related to tuning
the on-chip interconnects. For now i am not expecting a lot of traffic,
so let's use the linux-pm@ list.

Acked-by: Rafael J. Wysocki <[e-mail]>
Signed-off-by: Georgi Djakov <[e-mail]>

MAINTAINERS

···
 
 INTERCONNECT API
 M:	Georgi Djakov <[e-mail]>
+L:	[e-mail]
 S:	Maintained
 F:	Documentation/interconnect/
 F:	Documentation/devicetree/bindings/interconnect/