uml: fold mmu_context_skas into mm_context

This patch folds mmu_context_skas into struct mm_context, changing all users
of these structures as needed.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
index 58ae065..86f6b18 100644
--- a/arch/um/sys-x86_64/syscalls.c
+++ b/arch/um/sys-x86_64/syscalls.c
@@ -30,7 +30,7 @@
 {
 	unsigned long *ptr = addr, tmp;
 	long ret;
-	int pid = task->mm->context.skas.id.u.pid;
+	int pid = task->mm->context.id.u.pid;
 
 	/*
 	 * With ARCH_SET_FS (and ARCH_SET_GS is treated similarly to