Avoid use of sqrt for mouse accel.

Convert twin_linux_mouse_accel() to twin_fixed_t arithmetic to avoid
dependency on libm.

Depends on separate patch which actually fixes twin_fixed_sqrt()

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2 files changed