MAINTAINERS: Add myself as a maintainer for TCAN4x5x

Adding myself to support the TI TCAN4X5X SPI CAN device.

Signed-off-by: Dan Murphy <[e-mail]>
Signed-off-by: Marc Kleine-Budde <[e-mail]>

MAINTAINERS

···
 S:	Odd Fixes
 F:	sound/soc/codecs/tas571x*
 
+TI TCAN4X5X DEVICE DRIVER
+M:	Dan Murphy <[e-mail]>
+L:	[e-mail]
+S:	Maintained
+F:	Documentation/devicetree/bindings/net/can/tcan4x5x.txt
+F:	drivers/net/can/m_can/tcan4x5x.c
+
 TI TRF7970A NFC DRIVER
 M:	Mark Greer <[e-mail]>
 L:	[e-mail]