Fix Kconfig typo
Various changes associated with symbol tables.  Most from Pelle Windestam
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Add support for a network device IOCTL to access PHY registers.  Ioctls only implemented for STM32.  From Lazlo
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NET: Move net/netdev*.c to net/netdev/netdev*.c
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Fix conflict in ChangeLog
Move NETDEV config from net/Kconfig to net/netdev/Kconfig
Add apps/system/mdio from Lazlo
Merge remote-tracking branch 'origin/master' into netiob
Add missing source of netdev/Kconfig
Updates for coding style
Updated ChangeLog
Cosmetic update to comments
SAM4CM: Add IPC register header file.  From Macs N
SAM4CM: Fixes from Macs N
NSH: Networking features modified to handle the case of SLIP networks.
Update ChangeLogs
SAMA5D4:  Bootloader needs to flush D-Cache to memory before disabling the caches