Drop support on armv7a on Android

Resolves: COMPMID-5379

Change-Id: Ie2564b8ef029241e34b964de524c4a4c288a7846
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/7735
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Marquez Tello <pablo.tello@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/SConstruct b/SConstruct
index b0b5649..890c519 100644
--- a/SConstruct
+++ b/SConstruct
@@ -168,6 +168,10 @@
 
 Help(vars.GenerateHelpText(env))
 
+if 'armv7a' in env['arch'] and env['os'] == 'android':
+    print("armv7a is not supported on Android")
+    Exit(1)
+
 if env['linker_script'] and env['os'] != 'bare_metal':
     print("Linker script is only supported for bare_metal builds")
     Exit(1)