use the ASIX AX88190 defines from ax88190reg.h and remove some
AX88190 specific defines from ne2000reg.h

From NetBSD

Changes from NetBSD:
* support for ax88190
* set the memory size based on the ne2k type, changing the number
of transmit buffers.
* make ne2000_attach return some value so it can be used in pcmcia.

Changes from NetBSD:
* support for ax88190
* set the memory size based on the ne2k type, changing the number
of transmit buffers.
* make ne2000_attach return some value so it can be used in pcmcia.
* move code for dl10019 to the pcmcia part.

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Add the NE[12]00 core driver from NetBSD.