MAINTAINERS: Add NS2 entry

Add NS2 to the Broadcom iProc Subsystem maintainers entry.  Since most
of the NS2 entries are already covered via the ns* already present
there, all that is currently needed is to reference the device tree
files.
Signed-off-by: Jon Mason <jon.mason@broadcom.com>
Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

MAINTAINERS

@@ -2614,6 +2614,7 @@ N:	bcm583*
 N:	bcm585*
 N:	bcm586*
 N:	bcm88312
+F:	arch/arm64/boot/dts/broadcom/ns2*
 F:	drivers/clk/bcm/clk-ns*
 F:	drivers/pinctrl/bcm/pinctrl-ns*