Thermal: Add Linux/Thermal subsystem info in MAINTAINER file

All the changes made to the generic thermal layer, or platform thermal
drivers that make use of the thermal layer, should be sent to
[e-mail] for discussion.

And as the maintainer, I will only apply the patches that have been sent
to [e-mail].

Signed-off-by: Zhang Rui <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

MAINTAINERS

···
 S:	Maintained
 F:	arch/xtensa/
 
+THERMAL
+M:      Zhang Rui <[e-mail]>
+L:      [e-mail]
+T:      git git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux.git
+S:      Supported
+F:      drivers/thermal/
+F:      include/linux/thermal.h
+
 THINKPAD ACPI EXTRAS DRIVER
 M:	Henrique de Moraes Holschuh <[e-mail]>
 L:	[e-mail]