Removed delay from ipc transmission
IPC Rework
Removed IPC debug functions
IPC tx & rx working
Removed debug LED from spi_wait()
IPC rework
Idea of ipc packet handling
IPC dynamic packet size

Adds dynamic handling of packet size of
all IPC packet. Earlier the size was fixed
to 3 bytes overhead and 2 bytes data.
Added CRC check on IPC transfers

For eache IPC transfer a CRC8 checksum is
calculated to improve robustness.
IPC temp demo