Staging: vt6655: remove I8 custom macro

Remove custom macro for signed 8-bit integers.

Signed-off-by: Charles Clément <caratorn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/vt6655/card.h b/drivers/staging/vt6655/card.h
index d2207bf..00dce0310 100644
--- a/drivers/staging/vt6655/card.h
+++ b/drivers/staging/vt6655/card.h
@@ -189,7 +189,7 @@
 CARDvSetPowerConstraint (
     void *pDeviceHandler,
     BYTE             byChannel,
-    I8               byPower
+    char byPower
     );
 
 void
@@ -205,7 +205,7 @@
     PBYTE        pbyIEs
     );
 
-I8
+char
 CARDbyGetTransmitPower (
     void *pDeviceHandler
     );