QSAP: Add support to set operating mode "any".

Currently softap sdk allows only following modes:
"b", "g", "n", "g-only", "n-only", "a".

This commit adds support for hw_mode "any" via QSAP.

CRs-Fixed: 2250379
Change-Id: I13de4c196c3cd752a902ef8bf3fed4a01f95eb6a

softap/sdk/qsap_api.h

@@ -414,6 +414,7 @@ enum oper_mode {
     HW_MODE_G_ONLY = 3,
     HW_MODE_N_ONLY = 4,
     HW_MODE_A = 5,
+    HW_MODE_ANY = 6,
 
     HW_MODE_UNKNOWN
 };