MAINTAINERS: Update Broadcom iProc regexp with Hurricane 2

Update the Broadcom iProc regepx with recently added Hurricane 2 SoC
support.
Acked-by: NJon Mason <jon.mason@broadcom.com>
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>

MAINTAINERS

@@ -2912,6 +2912,7 @@ N:	bcm583*
 N:	bcm585*
 N:	bcm586*
 N:	bcm88312
+N:	hr2
 F:	arch/arm64/boot/dts/broadcom/ns2*
 F:	drivers/clk/bcm/clk-ns*
 F:	drivers/pinctrl/bcm/pinctrl-ns*