ath6kl: fix typo

Change-Id: I47b515130bd35fb6d73b704e6e948a812fea049b
msm: acpuclock: Fix acpuclk_data null pointer dereference

If acpuclk_data is null, dereferencing it in acpuclk_get_switch_time
causes a kernel panic.  Add pointer check to fix that.

Change-Id: Ie31bd7d57aea0ca05ba7f8ad1bf529f8836a7104
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>