cmd_scsi: Enable SoC AHCI device on platforms with PCI

Current driver assumes the AHCI is connected to PCI, this is not
true on some SoCs, e.g. LS1021A, which has PCI but the AHCI is
in SoC. This patch will enable embedded AHCI devices on platforms
with PCI.
PCI AHCI devices still can be used by commenting CONFIG_SCSI_AHCI_PLAT
option in head file.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

common/cmd_scsi.c

@@ -37,7 +37,7 @@
 #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
 #endif
 
-#ifdef CONFIG_PCI
+#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
 const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
 #endif
 static ccb tempccb;	/* temporary scsi command buffer */
@@ -179,7 +179,7 @@ int scsi_get_disk_count(void)
 	return scsi_max_devs;
 }
 
-#ifdef CONFIG_PCI
+#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
 void scsi_init(void)
 {
 	int busdevfunc;