MAINTAINERS: add myself for spi-bcm63xx

I noticed the driver is unclaimed. Since I was the last one doing
substantial work on it, add me as the maintainer.

As it is only found in legacy products, mark it as "Odd Fixes"
instead of "Maintained".

Signed-off-by: Jonas Gorski <[email protected]>
Acked-by: Florian Fainelli <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: KanjiMonster

MAINTAINERS

@@ -4169,6 +4169,13 @@ F:	Documentation/devicetree/bindings/spi/brcm,bcm63xx-hsspi.yaml
 F:	drivers/spi/spi-bcm63xx-hsspi.c
 F:	drivers/spi/spi-bcmbca-hsspi.c
 
+BROADCOM BCM6348/BCM6358 SPI controller DRIVER
+M:	Jonas Gorski <[email protected]>
+L:	[email protected]
+S:	Odd Fixes
+F:	Documentation/devicetree/bindings/spi/spi-bcm63xx.txt
+F:	drivers/spi/spi-bcm63xx.c
+
 BROADCOM ETHERNET PHY DRIVERS
 M:	Florian Fainelli <[email protected]>
 R:	Broadcom internal kernel review list <[email protected]>