Fix macro definitions

Wrap macro parameter in brackets to make sure macros always work
properly: without it GSM_FN_TO_MS(a - b) will result in a - b *
GSM_TDMA_FRAME_MS contrary to the user's expectation of (a - b) *
GSM_TDMA_FRAME_MS.

Change-Id: I38937469eb7948e2b8e6c1d7fba2c2adeba45b41
Reviewed-on: https://gerrit.osmocom.org/217
Tested-by: Jenkins Builder
Reviewed-by: Harald Welte <laforge@gnumonks.org>
1 file changed