framebuffer: red and blue are swapped on devices using MSM8974

I noticed that when using the framebuffer display with wayland on weston or plasma-mobile, the red and blue colors are swapped.
The problem has been found in the following devices, all sharing the MSM8974 SoC:

• oneplus-bacon, reported by @Nimayer
• samsung-klte, reported by @minlexx
• fairphone-fp2, reported by @z3ntu

Edit: The problem has been solved

Apparently the problem was due to an inverted byte order of the pixel format in the framebuffer driver.

Problem has been fixed with:

• !287 (merged) for oneplus-bacon
• !291 (merged) for samsung-klte
• !292 (merged) for fairphone-fp2

Here is an example picture of the problem