pci: Rename PCI_REGION_MEMORY to PCI_REGION_SYS_MEMORY for clarity

The PCI_REGION_MEMORY and PCI_REGION_MEM are a bit to similar and
can be confusing when reading the code.

Rename PCI_REGION_MEMORY to PCI_REGION_SYS_MEMORY to clarify its used
for system memory mapping purposes.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c
index db68f26..20b2dcc 100644
--- a/drivers/pci/fsl_pci_init.c
+++ b/drivers/pci/fsl_pci_init.c
@@ -72,7 +72,7 @@
 	debug ("R0 bus_start: %llx phys_start: %llx size: %llx\n",
 		(u64)bus_start, (u64)phys_start, (u64)pci_sz);
 	pci_set_region(r++, bus_start, phys_start, pci_sz,
-			PCI_REGION_MEM | PCI_REGION_MEMORY |
+			PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
 			PCI_REGION_PREFETCH);
 
 	sz -= pci_sz;
@@ -84,7 +84,7 @@
 		debug ("R1 bus_start: %llx phys_start: %llx size: %llx\n",
 			(u64)bus_start, (u64)phys_start, (u64)pci_sz);
 		pci_set_region(r++, bus_start, phys_start, pci_sz,
-				PCI_REGION_MEM | PCI_REGION_MEMORY |
+				PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
 				PCI_REGION_PREFETCH);
 		sz -= pci_sz;
 		bus_start += pci_sz;
@@ -108,7 +108,7 @@
 			CONFIG_SYS_PCI64_MEMORY_BUS,
 			CONFIG_SYS_PCI_MEMORY_PHYS,
 			pci_sz,
-			PCI_REGION_MEM | PCI_REGION_MEMORY |
+			PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
 			PCI_REGION_PREFETCH);
 #else
 	pci_sz = 1ull << __ilog2_u64(sz);
@@ -116,7 +116,7 @@
 		debug ("R2 bus_start: %llx phys_start: %llx size: %llx\n",
 			(u64)bus_start, (u64)phys_start, (u64)pci_sz);
 		pci_set_region(r++, bus_start, phys_start, pci_sz,
-				PCI_REGION_MEM | PCI_REGION_MEMORY |
+				PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
 				PCI_REGION_PREFETCH);
 		sz -= pci_sz;
 		bus_start += pci_sz;
@@ -157,7 +157,7 @@
 
 	for (r=0; r<hose->region_count; r++) {
 		u32 sz = (__ilog2_u64((u64)hose->regions[r].size) - 1);
-		if (hose->regions[r].flags & PCI_REGION_MEMORY) { /* inbound */
+		if (hose->regions[r].flags & PCI_REGION_SYS_MEMORY) { /* inbound */
 			u32 flag = PIWAR_EN | PIWAR_LOCAL |
 					PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP;
 			pi->pitar = (hose->regions[r].phys_start >> 12);