[ADD] base: add the brazilian state 'Acre'

Closes #13054

openerp/addons/base/res/res.country.state.csv

@@ -69,6 +69,7 @@ state_us_vi,us,"Virgin Islands","VI"
 state_us_aa,us,"Armed Forces Americas","AA"
 state_us_ae,us,"Armed Forces Europe","AE"
 state_us_ap,us,"Armed Forces Pacific","AP"
+state_br_ac,br,"Acre","AC"
 state_br_al,br,"Alagoas","AL"
 state_br_ap,br,"Amapá","AP"
 state_br_am,br,"Amazonas","AM"
@@ -642,4 +643,4 @@ state_id_sa,id,"Sulawesi Utara","SA"
 state_id_sb,id,"Sumatra Barat","SB"
 state_id_ss,id,"Sumatra Selatan","SS"
 state_id_su,id,"Sumatra Utara","SU"
-state_id_yo,id,"Yogyakarta","YO"
\ No newline at end of file
+state_id_yo,id,"Yogyakarta","YO"