m68k: Fix bug, "address of" operator was forgotten

in_be16() shall be passed a pointer to register and not its value. This
is clearly a typo resulting in a wrong memory access, so fix it.

Cc: Alison Wang <b18965@freescale.com>, Jason Jin <Jason.jin@freescale.com>
Signed-off-by: Vasili Galka <vvv444@gmail.com>

arch/m68k/cpu/mcf5445x/speed.c

@@ -115,7 +115,7 @@ void setup_5441x_clocks(void)
 	gd->cpu_clk = vco / temp;	/* cpu clock */
 	gd->arch.flb_clk = vco / temp;	/* FlexBus clock */
 	gd->arch.flb_clk >>= 1;
-	if (in_be16(ccm->misccr2) & 2)		/* fsys/4 */
+	if (in_be16(&ccm->misccr2) & 2)		/* fsys/4 */
 		gd->arch.flb_clk >>= 1;
 
 	temp = ((pdr & PLL_DR_OUTDIV2_BITS) >> 5) + 1;