DAVINCI_EMAC needs PHYLIB

Make sure that PHYLIB is selected along with TI_DAVINCI_EMAC,
to prevent link errors.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

drivers/net/Kconfig

@@ -910,6 +910,7 @@ config SMC91X
 config TI_DAVINCI_EMAC
 	tristate "TI DaVinci EMAC Support"
 	depends on ARM && ARCH_DAVINCI
+	select PHYLIB
 	help
 	  This driver supports TI's DaVinci Ethernet .