gradle: add max-page-size 16384 (#1213)

This uses Gradle 7, so must specify page size exactly, rather
than being able to use the newer options.
    
This may not update the APK alignment, but you can always run
zipalign to realign an unaligned APK. Or, if you pull the .so
directly it will work.

android/build.gradle

@@ -58,7 +58,8 @@ if (androidSdkInstalled) {
                     arguments '-DANDROID=True',
                             '-DANDROID_STL=c++_static',
                             "-DBORINGSSL_HOME=$boringsslHome",
-                            "-DCMAKE_CXX_STANDARD=17"
+                            "-DCMAKE_CXX_STANDARD=17",
+                            '-DCMAKE_SHARED_LINKER_FLAGS=-z max-page-size=16384'
                     cFlags '-fvisibility=hidden',
                             '-DBORINGSSL_SHARED_LIBRARY',
                             '-DBORINGSSL_IMPLEMENTATION',