staging: vt6655: fix sparse warning

Added missing static qualifier
Signed-off-by: Ioana Ileana <ioana.ileana@telecom-paristech.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6655/datarate.c

@@ -51,7 +51,7 @@ extern unsigned short TxRate_iwconfig; //2008-5-8 <add> by chester
 /*---------------------  Static Variables  --------------------------*/
 //static int          msglevel                =MSG_LEVEL_DEBUG;
 static int msglevel = MSG_LEVEL_INFO;
-const unsigned char acbyIERate[MAX_RATE] =
+static const unsigned char acbyIERate[MAX_RATE] =
 {0x02, 0x04, 0x0B, 0x16, 0x0C, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C};
 
 #define AUTORATE_TXOK_CNT       0x0400