The arm64 uapi sigcontext.h can be included by 32-bit userspace modules. Since arm and arm64 sigcontext definition are not compatible, add arm sigcontext definition to arm64 sigcontext.h. Signed-off-by: David Ng <dave@codeaurora.org> Signed-off-by: Divya Sharma <c_shard@codeaurora.org> Signed-off-by: Anh Nguyen <anguyen@codeaurora.org> Change-Id: Iaed58045fd345e4ca66e8a6981c6b4f80c4bdfca