[U-Boot] [PATCH 3/4] sound: sandbox: Use the correct frequency

[sjg at google.com]

At present we request a particular frequency but we may not get the exact
same frequency in response. So use the actual frequency for generation of
the square wave. This ensures that the pitch remains accurate on all host
machines.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/sandbox/cpu/sdl.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

Applied to u-boot-dm/master, thanks!