[source] kernel: add KERNEL_DEVMEM and KERNEL_DEVKMEM

[LEDE Commits]

hauke pushed a commit to source.git, branch master:
https://git.lede-project.org/6e7fdf07b7134fddff0e0c9e24bd39d1ed4b4954

commit 6e7fdf07b7134fddff0e0c9e24bd39d1ed4b4954
Author: Hauke Mehrtens <hauke at hauke-m.de>
AuthorDate: Sat Dec 17 15:00:59 2016 +0100

    kernel: add KERNEL_DEVMEM and KERNEL_DEVKMEM
    
    These options are needed to create /dev/mem or /dev/kmem .
    /dev/mem is needed by the io tool to access raw hardware memory, which
    is helpful when debugging and developing drivers.
    
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
    Acked-by: John Crispin <john at phrozen.org>
---
 config/Config-kernel.in | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index 3c69c86..3f30013 100644
--- a/config/Config-kernel.in
+++ b/config/Config-kernel.in
@@ -745,3 +745,17 @@ menu "Filesystem ACL and attr support options"
 		default y if USE_FS_ACL_ATTR
 
 endmenu
+
+config KERNEL_DEVMEM
+	bool "/dev/mem virtual device support"
+	help
+	  Say Y here if you want to support the /dev/mem device.
+	  The /dev/mem device is used to access areas of physical
+	  memory.
+
+config KERNEL_DEVKMEM
+	bool "/dev/kmem virtual device support"
+	help
+	  Say Y here if you want to support the /dev/kmem device. The
+	  /dev/kmem device is rarely used, but can be used for certain
+	  kind of kernel debugging operations.