ACPI: Kconfig: ACPI should depend on, not select PCI

Otherwise, illegal configurations like X86_VOYAGER=y, PCI=y are
possible.

This patch also fixes the options select'ing ACPI to also select PCI.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index edffe25..0046020 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -77,6 +77,7 @@
 config IA64_GENERIC
 	bool "generic"
 	select ACPI
+	select PCI
 	select NUMA
 	select ACPI_NUMA
 	help