fw-api: CL 20755332 - update fw common interface files

add WMI_VENDOR1_REQ2_VERSION_3_40 def

Change-Id: Ifff85a1cfb77bfc6d2fadf5f461660211316af96
CRs-Fixed: 2262693

fw/wmi_unified.h

@@ -4953,6 +4953,7 @@ typedef enum {
     WMI_VENDOR1_REQ1_VERSION_3_01   = 1,
     WMI_VENDOR1_REQ1_VERSION_3_20   = 2,
     WMI_VENDOR1_REQ1_VERSION_3_30   = 3,
+    WMI_VENDOR1_REQ1_VERSION_3_40   = 4,
 } WMI_VENDOR1_REQ1_VERSION;
 
 typedef enum {