MAINTAINERS: brcmnand: Add Broadcom internal mailing-list

The Broadcom NAND driver is used by many different groups at Broadcom
now, so use the same mailing-list we use for other areas of the kernel.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

MAINTAINERS

@@ -2450,6 +2450,7 @@ F:	drivers/firmware/broadcom/*
 BROADCOM STB NAND FLASH DRIVER
 M:	Brian Norris <computersforpeace@gmail.com>
 L:	linux-mtd@lists.infradead.org
+L:	bcm-kernel-feedback-list@broadcom.com
 S:	Maintained
 F:	drivers/mtd/nand/brcmnand/