[XTENSA] clean-up header files
The header files in the asm-xtensa directory are not clean and
'make headers_check' fails. This is a first patch to fix most of
the header files. It removes unnecessary include statements and
adds some that are required for building the kernel. The linker
script required some updates or the linking stage would fail.
Signed-off-by: Chris Zankel <chris@zankel.net>
diff --git a/include/asm-xtensa/mmu_context.h b/include/asm-xtensa/mmu_context.h
index 92f9483..c0fd8e5 100644
--- a/include/asm-xtensa/mmu_context.h
+++ b/include/asm-xtensa/mmu_context.h
@@ -14,6 +14,7 @@
#define _XTENSA_MMU_CONTEXT_H
#include <linux/stringify.h>
+#include <linux/sched.h>
#include <asm/pgtable.h>
#include <asm/cacheflush.h>