96boardsctl: Change pulse width to 1000ms
96boardsctl: Change pulse width to 1000ms

100ms wasn't wide enough to trigger power on the HiKey. Make it a full
second to ensure the board powers up.

Signed-off-by: Grant Likely <9069e6f5a2b566e2674a0ba1e2bf39c12c195fad@linaro.org>

96boards/96boards-uart,daniel-thompson/96boards-uart