powerpc/boot: remove unused variable in mpc8xx

Variable div is set but never used. Remove it.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/boot/mpc8xx.c

@@ -24,7 +24,7 @@ u32 mpc885_get_clock(u32 crystal)
 {
 	u32 *immr;
 	u32 plprcr;
-	int mfi, mfn, mfd, pdf, div;
+	int mfi, mfn, mfd, pdf;
 	u32 ret;
 
 	immr = fsl_get_immr();
@@ -43,7 +43,6 @@ u32 mpc885_get_clock(u32 crystal)
 	}
 
 	pdf = (plprcr >> 1) & 0xf;
-	div = (plprcr >> 20) & 3;
 	mfd = (plprcr >> 22) & 0x1f;
 	mfn = (plprcr >> 27) & 0x1f;