MPC8308RDB: various clean ups

This patch cleans up the Freescale MPC8308RDB Development board support.
Things fixed:
 - Removed unused PCIE2 definitions from configuration
 - SICR{L,H} defines used for System I/O Configuration Registers values
   instead of hardcoding
 - CONFIG_SYS_SCCR_PCIEXP1CM used to enable PCIE clock instead of
   writing to SCCR from the board code
 - sleep mode stuff removed as MPC8308 has no support for deep sleep and
   PMCCR1 register. board_early_init_f() removed.
 - MPC8308 has no ERRATA for DDR controller so workaround removed
 - 'assignment in if statement' issues solved
 - use LBLAWAR_* defines instead of hardcoding

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/board/freescale/mpc8308rdb/mpc8308rdb.c b/board/freescale/mpc8308rdb/mpc8308rdb.c
index a864189..fb29abf 100644
--- a/board/freescale/mpc8308rdb/mpc8308rdb.c
+++ b/board/freescale/mpc8308rdb/mpc8308rdb.c
@@ -36,16 +36,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-int board_early_init_f(void)
-{
-	immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
-
-	if (in_be32(&im->pmc.pmccr1) & PMCCR1_POWER_OFF)
-		gd->flags |= GD_FLG_SILENT;
-
-	return 0;
-}
-
 static u8 read_board_info(void)
 {
 	u8 val8;
@@ -96,16 +86,12 @@
 {
 	immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 	sysconf83xx_t *sysconf = &immr->sysconf;
-	clk83xx_t *clk = (clk83xx_t *)&immr->clk;
 	law83xx_t *pcie_law = sysconf->pcielaw;
 	struct pci_region *pcie_reg[] = { pcie_regions_0 };
 
 	fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_PEX,
 					FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
 
-	clrsetbits_be32(&clk->sccr, SCCR_PCIEXP1CM ,
-				    SCCR_PCIEXP1CM_1);
-
 	/* Deassert the resets in the control register */
 	out_be32(&sysconf->pecr1, 0xE0008000);
 	udelay(2000);
@@ -146,12 +132,14 @@
 	int rv, num_if = 0;
 
 	/* Initialize TSECs first */
-	if ((rv = cpu_eth_init(bis)) >= 0)
+	rv = cpu_eth_init(bis);
+	if (rv >= 0)
 		num_if += rv;
 	else
 		printf("ERROR: failed to initialize TSECs.\n");
 
-	if ((rv = pci_eth_init(bis)) >= 0)
+	rv = pci_eth_init(bis);
+	if (rv >= 0)
 		num_if += rv;
 	else
 		printf("ERROR: failed to initialize PCI Ethernet.\n");