sbc8548: get_clock_freq is not valid for this board

The get_clock_freq() comes from freescale/common/cadmus.c and is
only valid for the CDS based 85xx reference platforms.  It would
be nice if we could read the 33 vs. 66MHz status somehow, but in
the meantime, tie it to CONFIG_SYS_CLK_FREQ like all the other
non-CDS boards do.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

board/sbc8548/sbc8548.c

@@ -339,13 +339,13 @@ pci_init_board(void)
 	uint pci_arb = gur->pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;	/* PORDEVSR[14] */
 	uint pci_clk_sel = gur->porpllsr & MPC85xx_PORDEVSR_PCI1_SPD;	/* PORPLLSR[16] */
 
-	uint pci_speed = get_clock_freq ();	/* PCI PSPEED in [4:5] */
+	uint pci_speed = CONFIG_SYS_CLK_FREQ;	/* get_clock_freq() */
 
 	if (!(gur->devdisr & MPC85xx_DEVDISR_PCI1)) {
 		printf ("    PCI host: %d bit, %s MHz, %s, %s\n",
 			(pci_32) ? 32 : 64,
-			(pci_speed == 33333000) ? "33" :
-			(pci_speed == 66666000) ? "66" : "unknown",
+			(pci_speed == 33000000) ? "33" :
+			(pci_speed == 66000000) ? "66" : "unknown",
 			pci_clk_sel ? "sync" : "async",
 			pci_arb ? "arbiter" : "external-arbiter"
 			);