qcacld-3.0: Correct the definition of CONFIG_AR900B

There is wrong logic and won't define CONFIG_AR900B for HSP platform.
So add this change to correct the logic and define CONFIG_AR900B
properly.

Change-Id: I60e3bf0a0f9778a821bbe89289cf88f4dbc432e0
CRs-Fixed: 2996497

configs/default_defconfig

@@ -534,7 +534,7 @@ endif
 endif
 
 # Enable fw stats version 2
-ifeq (y,$(findstring y,$(CONFIG_HELIUMPLUS) $(CONFIG_LITHIUM)) $(CONFIG_BERYLLIUM))
+ifeq (y,$(findstring y,$(CONFIG_HELIUMPLUS) $(CONFIG_LITHIUM) $(CONFIG_BERYLLIUM)))
 CONFIG_AR900B := y
 endif