/dev/mem: make promisc the default

default to the old semantics.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 0c1890c..239fd9f 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -7,7 +7,6 @@
 
 config NONPROMISC_DEVMEM
 	bool "Disable promiscuous /dev/mem"
-	default y
 	help
 	  The /dev/mem file by default only allows userspace access to PCI
 	  space and the BIOS code and data regions. This is sufficient for