Added test files and some functions!

Added both source- and headerfile for test_tc. The headerfile
adds definitions for every function in tc.h, both the source file
only implements conf_channel and enable_clock. These tests are
"renegade coded" and need proper structure etc both are there to test
if there is any sign of life at all with the code. The functions they
test are also implemented (renegade style) and to my anger, both test
FAILS. Why is this? It doesn't seem to read/write correctly to the registers, even though I have tested writeprotect/defined registerpointers
and checking all individually. WHY HAVE YOU FORSAKEN ME LORD?!