staging: prima: rebase on sony_msm8x60's driver

This is a direct replacement of drivers/staging/prima from
https://github.com/CyanogenMod/android_kernel_sony_msm8x60/commits/cm-11.0/drivers/staging/prima
up to commit "prima: wlan: Revision 3.2.7.47"
(67885bfc5293e6fbd7c1bc4d7ac510db579e644e).

Change-Id: I1488a8204e855cc76355fdc782401c1c42a1c30d