x86: Rename PORT_RESET to IO_PORT_RESET

This same name is used in USB. Add a prefix to distinguish it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
index afc3ecd..7dfe071 100644
--- a/arch/x86/cpu/cpu.c
+++ b/arch/x86/cpu/cpu.c
@@ -469,14 +469,14 @@
 __weak void reset_cpu(ulong addr)
 {
 	/* Do a hard reset through the chipset's reset control register */
-	outb(SYS_RST | RST_CPU, PORT_RESET);
+	outb(SYS_RST | RST_CPU, IO_PORT_RESET);
 	for (;;)
 		cpu_hlt();
 }
 
 void x86_full_reset(void)
 {
-	outb(FULL_RST | SYS_RST | RST_CPU, PORT_RESET);
+	outb(FULL_RST | SYS_RST | RST_CPU, IO_PORT_RESET);
 }
 
 int dcache_status(void)