[PATCH] IPMI build fix

From: Adrian Bunk <bunk@fs.tum.de>

Fix ACPI compile error if doing processor probing only: acpi_find_bmc is
only available #ifdef CONFIG_ACPI_INTERPRETER.

drivers/char/ipmi/ipmi_kcs_intf.c

@@ -1016,7 +1016,7 @@ static int init_one_kcs(int kcs_port,
 	return rv;
 }
 
-#ifdef CONFIG_ACPI
+#ifdef CONFIG_ACPI_INTERPRETER
 
 /* Retrieve the base physical address from ACPI tables.  Originally
    from Hewlett-Packard simple bmc.c, a GPL KCS driver. */
@@ -1072,7 +1072,7 @@ static __init int init_ipmi_kcs(void)
 	int		rv = 0;
 	int		pos = 0;
 	int		i = 0;
-#ifdef CONFIG_ACPI
+#ifdef CONFIG_ACPI_INTERPRETER
 	unsigned long	physaddr = 0;
 #endif
 
@@ -1102,7 +1102,7 @@ static __init int init_ipmi_kcs(void)
 	   (because they weren't already specified above). */
 
 	if (kcs_trydefaults) {
-#ifdef CONFIG_ACPI
+#ifdef CONFIG_ACPI_INTERPRETER
 		if ((physaddr = acpi_find_bmc())) {
 			if (!check_mem_region(physaddr, 2)) {
 				rv = init_one_kcs(0,