mips: delete non-required instances of include <linux/init.h>

None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6320/

arch/mips/sgi-ip27/ip27-xtalk.c

@@ -7,7 +7,6 @@
  * Generic XTALK initialization code
  */
 
-#include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/smp.h>
 #include <asm/sn/types.h>