This patch
- makes mdio_device.c part of libphy
- makes mdio_device_(un)register_reset() static
- moves mdiobus_(un)register_device() from mdio_bus.c to mdio_device.c,
  stops exporting both functions and makes them private to phylib

This further decouples the MDIO consumer functionality from libphy.

Note: This makes MDIO driver registration part of phylib, therefore
      adjust Kconfig dependencies where needed.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
v2:
- add needed Kconfig dependency changes
---
 drivers/clk/qcom/Kconfig          |  2 +-
 drivers/net/phy/Makefile          |  6 ++---
 drivers/net/phy/mdio-private.h    | 11 ---------
 drivers/net/phy/mdio_bus.c        | 36 ----------------------------
 drivers/net/phy/mdio_device.c     | 39 ++++++++++++++++++++++++++++---
 drivers/net/phy/phylib-internal.h |  4 ++++
 drivers/phy/broadcom/Kconfig      |  4 ++--
 include/linux/mdio.h              |  2 --
 8 files changed, 46 insertions(+), 58 deletions(-)
 delete mode 100644 drivers/net/phy/mdio-private.h

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index a8a86ea6bb7..a277c434d64 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig

@@ -392,7 +392,7 @@ config IPQ_NSSCC_9574
 
 config IPQ_NSSCC_QCA8K
 	tristate "QCA8K(QCA8386 or QCA8084) NSS Clock Controller"
-	depends on MDIO_BUS
+	depends on PHYLIB
 	help
 	  Support for NSS(Network SubSystem) clock controller on
 	  qca8386/qca8084 chip.