satman: drive CLK_SEL to true when si549 is used
satman & si549: add main & helper si549 setup
satman & si549: add WRPLL select_recovered_clock
si549: add tag collector to process gtx & main tags
si549: add tag offset to meet setup/hold constraints for CDR
si549: add frequency counter to set BASE_ADPLL
si549: add set_adpll for main & helper PLL
si549: add main & helper PLL
FIQ & si549: replace dummy with a custom handler for gtx & main tags ISR