MAINTAINERS: Update B53 section to cover SF2 switch driver

Update the B53 Ethernet switch section to contain
drivers/net/dsa/bcm_sf2*.

Reported-by: Russell King (Oracle) <[email protected]>
Signed-off-by: Florian Fainelli <[email protected]>
Acked-by: Russell King (Oracle) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: ffainelli

MAINTAINERS

@@ -3570,13 +3570,14 @@ L:	[email protected]
 S:	Supported
 F:	drivers/net/ethernet/broadcom/b44.*
 
-BROADCOM B53 ETHERNET SWITCH DRIVER
+BROADCOM B53/SF2 ETHERNET SWITCH DRIVER
 M:	Florian Fainelli <[email protected]>
 L:	[email protected]
 L:	[email protected] (subscribers-only)
 S:	Supported
 F:	Documentation/devicetree/bindings/net/dsa/brcm,b53.yaml
 F:	drivers/net/dsa/b53/*
+F:	drivers/net/dsa/bcm_sf2*
 F:	include/linux/dsa/brcm.h
 F:	include/linux/platform_data/b53.h