fs/kernel: -O3 fixes

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
net/sunrpc: fix 'subbuf.[...]' may be used uninitialized in this function

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
hub: fix various uninitialized variables

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
vfp: compile with neon

Conflicts:

	arch/arm/vfp/Makefile