Input: bma150 - use sign_extend32() for sign extending

Despite it's name, sign_extend32() is used for 16 bit values aswell.

Signed-off-by: Martin Kepplinger <[e-mail]>
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/misc/bma150.c

···
 	y = ((0xc0 & data[2]) >> 6) | (data[3] << 2);
 	z = ((0xc0 & data[4]) >> 6) | (data[5] << 2);
 
-	/* sign extension */
-	x = (s16) (x << 6) >> 6;
-	y = (s16) (y << 6) >> 6;
-	z = (s16) (z << 6) >> 6;
+	x = sign_extend32(x, 9);
+	y = sign_extend32(y, 9);
+	z = sign_extend32(z, 9);
 
 	input_report_abs(bma150->input, ABS_X, x);
 	input_report_abs(bma150->input, ABS_Y, y);