Compile issues related to sock interface and IAR toolchain

[TimothyClaeys]

The IAR project files for openmote are outdated. They do not include latest folder structure changes. In addition the config options for board, apps, and stack are not supported properly. Further the socket related code parts require slight modifications since errno.h of IAR does not support all relevant errorcodes.

Issue reported by @Chris-Ho

Fix in PR: FW-887

[kyh-ly]

@thomaseichinger @changtengfei Hi, I used the CC2538 as the OpenWSN platform and I found there has an error when running the OpenVisuallizer.
21:51:04 ERROR 65a2 [IEEE802154E] the received packet format is not supported (code location 3)
21:51:10 ERROR 65a2 [IEEE802154E] the received packet format is not supported (code location 3)
21:51:20 ERROR 65a2 [IEEE802154E] the received packet format is not supported (code location 3)
21:51:34 ERROR 65a2 [IEEE802154E] the received packet format is not supported (code location 3)
21:52:09 ERROR 65a2 [IEEE802154E] the received packet format is not supported (code location 3)
21:52:45 ERROR 65a2 [IEEE802154E] the received packet format is not supported (code location 3)
21:52:56 ERROR 65a2 [IEEE802154E] the received packet format is not supported (code location 3)
21:53:58 ERROR 65a2 [IEEE802154E] the received packet format is not supported (code location 3)
21:54:33 ERROR 65a2 [IEEE802154E] the received packet format is not supported (code location 3)
When the slave mote receive the EB frame and it can not identify and parse packets