linux-imx

ath6kl: revert USB support

The ath6kl driver is causing build failures when the ath6kl bits are
not built as modules.  A better fix is forthcoming in a future release,
but for now lets revert the problematic code.

This reverts the following commits:

	fde57764ef8751b9aca11b6f6221ac5555bda699
	d70385a26ad9a122a5450d066550470107b6bc38
	59d954dda4b9b3f3e61d4b87a2b26952b8c4c09d

Signed-off-by: John W. Linville <linville@tuxdriver.com>