As a note we need to cache the requested speed setting, as the hla interface may not be ready when the first adapter_khz is called. Change-Id: I2fa6807d5f0bd3f0365cf178bd10a230c39415a7 Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk> Reviewed-on: http://openocd.zylin.com/2334 Tested-by: jenkins