Add new PPC 4xx NAPI EMAC driver

Signed-off-by: Eugene Surovegin <redacted>
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 drivers/net/Kconfig                   |   70 +
 drivers/net/ibm_emac/Makefile         |   11 
 drivers/net/ibm_emac/ibm_emac.h       |  309 +++++
 drivers/net/ibm_emac/ibm_emac_core.c  | 2248 +++++++++++++++++++++++++++++++++
 drivers/net/ibm_emac/ibm_emac_core.h  |  221 +++
 drivers/net/ibm_emac/ibm_emac_debug.c |  213 +++
 drivers/net/ibm_emac/ibm_emac_debug.h |   63 +
 drivers/net/ibm_emac/ibm_emac_mal.c   |  584 +++++++++
 drivers/net/ibm_emac/ibm_emac_mal.h   |  267 ++++
 drivers/net/ibm_emac/ibm_emac_phy.c   |  355 +++++
 drivers/net/ibm_emac/ibm_emac_phy.h   |   80 +
 drivers/net/ibm_emac/ibm_emac_rgmii.c |  202 +++
 drivers/net/ibm_emac/ibm_emac_rgmii.h |   65 +
 drivers/net/ibm_emac/ibm_emac_tah.c   |  111 ++
 drivers/net/ibm_emac/ibm_emac_tah.h   |   88 +
 drivers/net/ibm_emac/ibm_emac_zmii.c  |  256 ++++
 drivers/net/ibm_emac/ibm_emac_zmii.h  |   83 +
 17 files changed, 5226 insertions(+), 0 deletions(-)

Patch is quite big (146K) and can be found at

  http://kernel.ebshome.net/emac/06-add_napi_ibm_emac.diff

I can post it to the mail list for discussion, just let me know.