x86: ivybridge: Rename lpc_init() to lpc_init_extra()

In preparation for adding an init() method to the LPC uclass, rename this
existing function so that it will not conflict.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

arch/x86/cpu/ivybridge/bd82x6x.c

@@ -70,7 +70,7 @@ static int bd82x6x_probe(struct udevice *dev)
 
 	hose = pci_bus_to_hose(0);
 	lpc_enable(PCH_LPC_DEV);
-	lpc_init(hose, PCH_LPC_DEV);
+	lpc_init_extra(hose, PCH_LPC_DEV);
 	sata_node = fdtdec_next_compatible(blob, 0,
 					   COMPAT_INTEL_PANTHERPOINT_AHCI);
 	if (sata_node < 0) {

arch/x86/cpu/ivybridge/lpc.c

@@ -538,7 +538,7 @@ static int lpc_early_init(struct udevice *dev)
 	return 0;
 }
 
-int lpc_init(struct pci_controller *hose, pci_dev_t dev)
+int lpc_init_extra(struct pci_controller *hose, pci_dev_t dev)
 {
 	const void *blob = gd->fdt_blob;
 	int node;

arch/x86/include/asm/arch-ivybridge/pch.h

@@ -470,7 +470,7 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
 #define   DMISCI_STS	(1 << 9)
 #define TCO2_STS	0x66
 
-int lpc_init(struct pci_controller *hose, pci_dev_t dev);
+int lpc_init_extra(struct pci_controller *hose, pci_dev_t dev);
 void lpc_enable(pci_dev_t dev);
 
 #endif