drivers/firmware: const-ify DMI API and internals

Three main sets of changes:

1) dmi_get_system_info() return value should have been marked const,
   since callers should not be changing that data.

2) const-ify DMI internals, since DMI firmware tables should,
   whenever possible, be marked const to ensure we never ever write to
   that data area.

3) const-ify DMI API, to enable marking tables const where possible
   in low-level drivers.

And if we're really lucky, this might enable some additional
optimizations on the part of the compiler.

The bulk of the changes are #2 and #3, which are interrelated.  #1 could
have been a separate patch, but it was so small compared to the others,
it was easier to roll it into this changeset.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/video/imacfb.c b/drivers/video/imacfb.c
index 18ea4a549105..6455fd2a39f2 100644
--- a/drivers/video/imacfb.c
+++ b/drivers/video/imacfb.c
@@ -58,7 +58,7 @@ static int model		= M_UNKNOWN;
 static int manual_height;
 static int manual_width;
 
-static int set_system(struct dmi_system_id *id)
+static int set_system(const struct dmi_system_id *id)
 {
         printk(KERN_INFO "imacfb: %s detected - set system to %ld\n",
                 id->ident, (long)id->driver_data);