kmodloader: support loadable module parameters in modinfo

kmodloader: support loadable module parameters in modinfo

Current OpenWrt loadable modules embed details of parameters accepted on
loading, but these aren't shown to users. Enable modinfo to print this
information like most other distros. For example:

  root@OpenWrt:/# modinfo mac80211
  filename:       /lib/modules/6.1.65/mac80211.ko
  license:        GPL
  depends:        cfg80211,compat
  name:           mac80211
  vermagic:       6.1.65 SMP mod_unload MIPS32_R2 32BIT
  parm:           minstrel_vht_only (bool)
  parm:           max_nullfunc_tries (int)
  parm:           max_probe_tries (int)
  parm:           beacon_loss_count (int)
  parm:           probe_wait_ms (int)
  parm:           ieee80211_default_rc_algo (charp)

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>