staging: sm750fb: Remove unnecessary parentheses

Remove unnecessary parentheses from right side of an assignment. Issue
detected by the following Coccinelle semantic patch:

@r@
identifier x;
expression e1, e2;
@@

- x = (e1 << e2);
+ x = e1 << e2;

Signed-off-by: Rehas Sachdeva <aquannie@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm750fb/sm750_hw.c

@@ -322,8 +322,8 @@ int hw_sm750_crtc_setMode(struct lynxfb_crtc *crtc,
 		reg |= (var->xoffset & PANEL_WINDOW_WIDTH_X_MASK);
 		POKE32(PANEL_WINDOW_WIDTH, reg);
 
-		reg = ((var->yres_virtual - 1) <<
-		       PANEL_WINDOW_HEIGHT_HEIGHT_SHIFT);
+		reg = (var->yres_virtual - 1) <<
+		      PANEL_WINDOW_HEIGHT_HEIGHT_SHIFT;
 		reg &= PANEL_WINDOW_HEIGHT_HEIGHT_MASK;
 		reg |= (var->yoffset & PANEL_WINDOW_HEIGHT_Y_MASK);
 		POKE32(PANEL_WINDOW_HEIGHT, reg);