Fix a compiler warning on prototype mismatch

Fix a compiler warning on prototype mismatch

Fix the warning:
wpa_supplicant.c:2257:5: warning: conflicting types for
‘wpas_update_random_addr’ due to enum/integer mismatch; have ‘int(struct
wpa_supplicant *, enum wpas_mac_addr_style,  struct wpa_ssid *)’
[-Wenum-int-mismatch]
 2257 | int wpas_update_random_addr(struct wpa_supplicant *wpa_s,
      |     ^~~~~~~~~~~~~~~~~~~~~~~
In file included from wpa_supplicant.c:32:
wpa_supplicant_i.h:1653:5: note: previous declaration of
‘wpas_update_random_addr’ with type ‘int(struct wpa_supplicant *, int, 
struct wpa_ssid *)’
 1653 | int wpas_update_random_addr(struct wpa_supplicant *wpa_s, int
style,
      |     ^~~~~~~~~~~~~~~~~~~~~~~

Fixes: 1d4027fdbef2 ("Make random MAC address style parameters use common enum values")
Signed-off-by: Chien Wong <m@xv97.com>