requirements/cpu.txt: set platform_machine

fixes CPU build for s390x/ppc64le

Signed-off-by: Daniele Trifirò <[email protected]>

Author: dtrifiro

requirements/cpu.txt

@@ -17,4 +17,4 @@ torchvision==0.21.0; platform_machine == "ppc64le"
 datasets # for benchmark scripts
 
 # cpu cannot use triton 3.3.0
-triton==3.2.0; platform_machine != "ppc64le"
+triton==3.2.0; platform_machine == "x86_64"