added impl for hal::SetClockSource() in DUMMY hal

- required change since new function was added w/ commit 0d2498f8ae7fa6a3ba0729059c1b2c5f17970b99
- fixes linking errors when using dummy hal
pxarcore: fix bug where DAQ was not correctly initialized with TBM type
but #tbms instead when calling from api::daqStart()
Merge branch 'master' of github.com:psi46/pxar