IVGCVSW-5463 Change cmake version for delegate to 3.7

Signed-off-by: Jan Eilers <jan.eilers@arm.com>
Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
Change-Id: Idb3f9018a22d0f63c0f993fdfd282a1195454ac9
diff --git a/delegate/CMakeLists.txt b/delegate/CMakeLists.txt
index d4de4c2..6c238fa 100644
--- a/delegate/CMakeLists.txt
+++ b/delegate/CMakeLists.txt
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: MIT
 #
 
-cmake_minimum_required (VERSION 3.8.0)
+cmake_minimum_required (VERSION 3.7.0)
 project(armnnDelegate)
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -Wall -Wextra -Werror -Wold-style-cast -Wno-missing-braces -Wconversion -Wsign-conversion")