Jockey returns wrong enablement status of fglrx within iGPU mode

[Doro Wu]

Title: Jockey returns wrong enablement status of fglrx within iGPU mode

[Steps]
1. make sure dGPU is active
$ aticonfig --pxl
PowerXpress: Discrete GPU is active (High-Performance mode).

2. $ jockey -l will show xorg:fglrx is enabled
~$ jockey-text -l | grep fglrx
kmod:fglrx_experimental_12 - Experimental AMD binary Xorg driver and kernel module (Proprietary, Disabled, Not in use)
xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
xorg:fglrx_experimental_9 - ATI/AMD proprietary FGLRX graphics driver (**experimental** beta) (Proprietary, Disabled, Not in use)

3. Switch to iGPU
$ sudo aticonfig --px-igpu
PowerXpress: Integrated GPU is selected (Power-Saving mode), please restart Xserver(s) for changes to take effect!

[Expected result]
jockey-text -l shows fglrx is enabled

[Actual result]
fglrx is disabled
$ jockey-text -l | grep fglrx
kmod:fglrx_experimental_12 - Experimental AMD binary Xorg driver and kernel module (Proprietary, Disabled, Not in use)
xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Disabled, In use)
xorg:fglrx_experimental_9 - ATI/AMD proprietary FGLRX graphics driver (**experimental** beta) (Proprietary, Disabled, Not in use)

[Additional info]
bug 1184471