[FS#1196] ifxos: does not build using glibc instead musl

[LEDE Bugs]

The following task is now closed:

FS#1196 - ifxos: does not build using glibc instead musl
User who did this - Yousong Zhou (yousong)

Reason for closing: Fixed
Additional comments about closing: Fixed by https://git.lede-project.org/b59b799cb1ec5126ad3428e264bc349132adbaeb

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1196