net: phy: fix switch vendor name

Fix vendor name in MV88E61xx option description.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Chris Packham <judge.packham@gmail.com>
Tested-by: Chris Packham <judge.packham@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index bcea8a0..dceea15 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -46,7 +46,7 @@
 endif # B53_SWITCH
 
 config MV88E61XX_SWITCH
-	bool "Marvel MV88E61xx Ethernet switch PHY support."
+	bool "Marvell MV88E61xx Ethernet switch PHY support."
 
 if MV88E61XX_SWITCH