Introduce N_DWRD_SBF as symbolic constant for 10 dwords-per-subframe
Introduce N_DWRD_SBF as symbolic constant for 10 dwords-per-subframe

sgk/gps-sdr-sim,osqzss/gps-sdr-sim,sgk/gps-sdr-sim,andrmarkv/gps-sdr-sim,MohammadSecure/GPS-SDR-SIM,osqzss/gps-sdr-sim,MohammadSecure/GPS-SDR-SIM,andrmarkv/gps-sdr-sim,andrmarkv/gps-sdr-sim,thx0701/gps-sdr-sim,thx0701/gps-sdr-sim