config: Fix up some configs to not use CPU aliases.

Support for CPU aliases were removed recently.

Change-Id: I3c1173dc34170d8639d95e52bf660f248848f77f
Reviewed-on: https://gem5-review.googlesource.com/3100
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>

configs/example/apu_se.py

@@ -181,9 +181,9 @@ if buildEnv['PROTOCOL'] == 'None':
     fatal("GPU model requires ruby")
 
 # Currently the gpu model requires only timing or detailed CPU
-if not (options.cpu_type == "timing" or
-   options.cpu_type == "detailed"):
-    fatal("GPU model requires timing or detailed CPU")
+if not (options.cpu_type == "TimingSimpleCPU" or
+   options.cpu_type == "DerivO3CPU"):
+    fatal("GPU model requires TimingSimpleCPU or DerivO3CPU")
 
 # This file can support multiple compute units
 assert(options.num_compute_units >= 1)