staging: rtl8192e: adjust size of RxMIMOSignalStrength

The array RxMIMOSignalStrength in struct rtllib_rx_stats is always accessed
with indices in the range i = 0; i < 2. We can reduce the size from 4 to 2.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20240831100809.29173-6-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtllib.h

@@ -480,7 +480,7 @@ struct rtllib_rx_stats {
 	bool  bFirstMPDU;
 	bool  contain_htc;
 	u32   RxPWDBAll;
-	u8    RxMIMOSignalStrength[4];
+	u8    RxMIMOSignalStrength[2];
 	s8    RxMIMOSignalQuality[2];
 	bool  bPacketMatchBSSID;
 	bool  bIsCCK;