IVGCVSW-8178 Update build tool with Android ndk r26

Signed-off-by: Nikhil Raj <nikhil.raj@arm.com>
Change-Id: I86deb3bb2a587e59f10cfc3efce7118c2156c169
diff --git a/build-tool/scripts/common.sh b/build-tool/scripts/common.sh
index 419d278..0c3927b 100755
--- a/build-tool/scripts/common.sh
+++ b/build-tool/scripts/common.sh
@@ -39,7 +39,7 @@
 AARCH64_COMPILER_FLAGS+="CC=/usr/bin/aarch64-linux-gnu-gcc CXX=/usr/bin/aarch64-linux-gnu-g++ "
 
 # NDK
-NDK_VERSION=25
+NDK_VERSION=26b
 NDK_SRC="$SOURCE_DIR"/android-ndk-r"$NDK_VERSION"
 
 # ANDROID
diff --git a/build-tool/scripts/setup-armnn.sh b/build-tool/scripts/setup-armnn.sh
index cf0ee00..e5b4c21 100755
--- a/build-tool/scripts/setup-armnn.sh
+++ b/build-tool/scripts/setup-armnn.sh
@@ -38,11 +38,11 @@
 {
   cd "$SOURCE_DIR"
   echo -e "\n***** Downloading Android NDK *****\n"
-  wget https://dl.google.com/android/repository/android-ndk-r25-linux.zip
+  wget https://dl.google.com/android/repository/android-ndk-r26b-linux.zip
   echo -e "\n***** Extracting archive *****"
-  unzip android-ndk-r25-linux.zip
+  unzip android-ndk-r26b-linux.zip
   echo -e "\n***** Removing archive *****"
-  rm android-ndk-r25-linux.zip
+  rm android-ndk-r26b-linux.zip
   echo -e "\n***** Android NDK downloaded *****"
 }