staging: pi433: replace logical not with bitwise

sparse reports the following warning  "warning: dubious: x & !y".
Replaced te logical not with bitwise to resolve the warning
Signed-off-by: Quentin Swain <dudebrobro179@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/pi433/rf69.c

@@ -197,7 +197,7 @@ int rf69_set_deviation(struct spi_device *spi, u32 deviation)
 	lsb = (f_reg&0xff);
 
 	// check msb
-	if (msb & !FDEVMASB_MASK) {
+	if (msb & ~FDEVMASB_MASK) {
 		dev_dbg(&spi->dev, "set_deviation: err in calc of msb");
 		INVALID_PARAM;
 	}