ARM: mach-shmobile: Fix up ap4evb build warnings.

The FSI changes introduced IS_ERR_VALUE() checks for error conditions,
despite clk_get() handing back a pointer. Switch these over to IS_ERR()
like the rest of the code.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/arm/mach-shmobile/board-ap4evb.c

@@ -745,14 +745,14 @@ static void __init ap4evb_init(void)
 
 	/* set SPU2 clock to 119.6 MHz */
 	clk = clk_get(NULL, "spu_clk");
-	if (!IS_ERR_VALUE(clk)) {
+	if (!IS_ERR(clk)) {
 		clk_set_rate(clk, clk_round_rate(clk, 119600000));
 		clk_put(clk);
 	}
 
 	/* change parent of FSI A */
 	clk = clk_get(NULL, "fsia_clk");
-	if (!IS_ERR_VALUE(clk)) {
+	if (!IS_ERR(clk)) {
 		clk_register(&fsiackcr_clk);
 		clk_set_parent(clk, &fsiackcr_clk);
 		clk_put(clk);