qcacld-3.0: Add flag of using enhancements to serialization or not

Enhancements to serialization:
Permit cmd of different vdev can execute concurrently etc.

Change-Id: I6e30f6f73067fd93a7c1f44d4e8310e8557a6a68
CRs-Fixed: 2308582

Kbuild

@@ -2244,6 +2244,10 @@ cppflags-y += -DQCA_HOST2FW_RXBUF_RING
 # Enable lock of serialization component to avoid race condition issues
 cppflags-y += -DWLAN_CMD_SERIALIZATION_LOCKING
 
+#CONFIG_SERIALIZATION_V1: Don't use enhancements to serialization component
+#No CONFIG_SERIALIZATION_V1: Use enhancements to serialization component
+cppflags-y += -DCONFIG_SERIALIZATION_V1
+
 ccflags-$(CONFIG_ENABLE_SIZE_OPTIMIZE) += -Os
 
 # DFS component