FIXED_PHY must depend on PHYLIB=y

This patch fixes the following build error introduced by commit
a79d8e93d300adb84cccc38ac396cfb118c238ad and reported by Olaf Hering:

<--  snip  -->

...
  LD      .tmp_vmlinux1
arch/powerpc/sysdev/built-in.o: In function `of_add_fixed_phys':
fsl_soc.c:(.init.text+0xd34): undefined reference to `fixed_phy_add'
make: *** [.tmp_vmlinux1] Error 1

<--   snip  -->

Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index f4ca0591231d..3ac8529bb92c 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -67,6 +67,7 @@ config REALTEK_PHY
 
 config FIXED_PHY
         bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
+        depends on PHYLIB=y
         ---help---
           Adds the platform "fixed" MDIO Bus to cover the boards that use
           PHYs that are not connected to the real MDIO bus.