[Intel-gfx] [intel-gpu-tools][PATCH] Correct identification of the GEN5 chips on the IS_9XX() define

[Diego Celix]

Hi,

I've been trying to find the main cause because I got the following error:

Couldn't map MMIO region: No such file or directory

It happens when I execute some of the tools of the package.
I've realized that the mmio_bar was not correctly set (inside the
intel_get_mmio() function).

This patch changes one of the repeated checks for GEN4 in the IS_9XX macro,
to check for GEN5 instead.