staging: r8188eu: Fix smatch warnings for hal/rtl8188e_phycfg.c

Smatch reports the following:
drivers/staging/rtl8188eu/hal/rtl8188e_phycfg.c:857 getTxPowerIndex88E() error: buffer overflow 'pHalData->BW20_24G_Diff' 2 <= 2
drivers/staging/rtl8188eu/hal/rtl8188e_phycfg.c:864 getTxPowerIndex88E() error: buffer overflow 'pHalData->BW20_24G_Diff' 2 <= 2

The array in question is large enough to handle RADIO_PATH_X, where X is A or B.
The lines in question refer to RADIO_PATH_C, which is defined as 2.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/include/Hal8188EPhyCfg.h

@@ -75,7 +75,7 @@ enum rf_radio_path {
 
 #define MAX_PG_GROUP 13
 
-#define	RF_PATH_MAX			2
+#define	RF_PATH_MAX			3
 #define		MAX_RF_PATH		RF_PATH_MAX
 #define		MAX_TX_COUNT		4 /* path numbers */
 

drivers/staging/rtl8188eu/include/odm.h

@@ -950,7 +950,7 @@ struct odm_dm_struct {
 	struct timer_list FastAntTrainingTimer;
 };		/*  DM_Dynamic_Mechanism_Structure */
 
-#define ODM_RF_PATH_MAX 2
+#define ODM_RF_PATH_MAX 3
 
 enum ODM_RF_RADIO_PATH {
 	ODM_RF_PATH_A = 0,   /* Radio Path A */