ath6kl: rename module & integrate sdio support

(cherry picked from commit 24c78c5e1b6b2079fa355e45672fffd84ef384c9)

Change-Id: I106bd4ab1febbc083e04c88eef6e81da74ebc233
ath6kl: swap active/default board date file names

Use bdata.SD31.bin for better compatibility with AR6kSDK3.x driver.

(cherry picked from commit c3f93c5dd7ade09b94b8fef8601f73132c7758a5)

Change-Id: I888f2e384cafa41099cded9b7d7c32cf99c4e3c5
ath6kl: disable NETIF_F_IP_CSUM flag

Seems to cause networking failure on 2.6.35 Android kernel.

(cherry picked from commit 4c672102be59a1ed7e91b1357fc568e1e924eff1)

Change-Id: I4fe359494571c646c6f2da7ab93b686c3f91a19b