Update ACL pin to b70770ee65ccce71a74e73df55fcaeac3cb9d0d7
Update ACL pin to b70770ee65ccce71a74e73df55fcaeac3cb9d0d7

Signed-off-by: Nikhil Raj <70dde441576cd8b053dd4c3a595f3f0b9c7a63a3@arm.com>
Change-Id: I4f34e7ec3a66919379c2d96a6dedcb7117fbc723

ARM-software/armnn,ARM-software/armnn,ARM-software/armnn