ARM: platform fixups: remove mdesc argument to fixup function

Get rid of the mdesc pointer in the fixup function call.  No one uses
the mdesc pointer, it shouldn't be modified anyway, and we can't wrap
it, so let's remove it.

Platform files found by:

  $ regexp=$(git grep -h '\.fixup.*=' arch/arm |
		sed 's!.*= *\([^,]*\),* *!\1!' | sort -u |
		tr '\n' '|' | sed 's,|$,,;s,|,\\|,g')
  $ git grep $regexp arch/arm

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-msm/board-halibut.c b/arch/arm/mach-msm/board-halibut.c
index 18a3c97..f81ef1f 100644
--- a/arch/arm/mach-msm/board-halibut.c
+++ b/arch/arm/mach-msm/board-halibut.c
@@ -78,8 +78,8 @@
 	platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
-static void __init halibut_fixup(struct machine_desc *desc, struct tag *tags,
-				 char **cmdline, struct meminfo *mi)
+static void __init halibut_fixup(struct tag *tags, char **cmdline,
+				 struct meminfo *mi)
 {
 	mi->nr_banks=1;
 	mi->bank[0].start = PHYS_OFFSET;