Add a missing #define for the platform_kernel_launch_event.  Without this
fix, a call to platform_kernel_launch_event() becomes a noop on generic
kernels.  SN systems require this fix to successfully kdump/kexec from
certain hardware errors.
[bwalle@suse.de: fix it]
Signed-off-by: John Keller <jpk@sgi.com>
Cc: Bernhard Walle <bwalle@suse.de>
Acked-by: Simon Horman <horms@verge.net.au>
Acked-by: Jay Lan <jlan@sgi.com>
Acked-by: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 #  define platform_setup_msi_irq       ia64_mv.setup_msi_irq
 #  define platform_teardown_msi_irq    ia64_mv.teardown_msi_irq
 #  define platform_pci_fixup_bus       ia64_mv.pci_fixup_bus
+#  define platform_kernel_launch_event ia64_mv.kernel_launch_event
 # endif
 
 /* __attribute__((__aligned__(16))) is required to make size of the
        platform_setup_msi_irq,                 \
        platform_teardown_msi_irq,              \
        platform_pci_fixup_bus,                 \
+       platform_kernel_launch_event            \
 }
 
 extern struct ia64_machine_vector ia64_mv;