MAINTAINERS: update brcmstb entries

Add Gregory Fong and myself as maintainers for the brcmstb platform
along with Brian Norris and Marc Carino.

Signed-off-by: Florian Fainelli <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
diff --git a/MAINTAINERS b/MAINTAINERS
index bebc46e..7bbca94 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2087,6 +2087,8 @@
 BROADCOM BCM7XXX ARM ARCHITECTURE
 M:	Marc Carino <[email protected]>
 M:	Brian Norris <[email protected]>
+M:	Gregory Fong <[email protected]>
+M:	Florian Fainelli <[email protected]>
 L:	[email protected] (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/mach-bcm/*brcmstb*