Fix Android build with the most resent android.toolchain.cmake

cmake/OpenCVGenAndroidMK.cmake

@@ -19,6 +19,22 @@ if(ANDROID)
     set(OPENCV_STATIC_LIBTYPE_CONFIGMAKE ${OPENCV_LIBTYPE_CONFIGMAKE})
   endif()
 
+  if (NOT COMMAND ANDROID_GET_ABI_RAWNAME)
+    macro( ANDROID_GET_ABI_RAWNAME TOOLCHAIN_FLAG VAR )
+      if( " ${TOOLCHAIN_FLAG}" STREQUAL " ARMEABI" )
+        set( ${VAR} "armeabi" )
+      elseif( " ${TOOLCHAIN_FLAG}" STREQUAL " ARMEABI_V7A" )
+        set( ${VAR} "armeabi-v7a" )
+      elseif( " ${TOOLCHAIN_FLAG}" STREQUAL " X86" )
+        set( ${VAR} "x86" )
+      elseif( " ${TOOLCHAIN_FLAG}" STREQUAL " MIPS" )
+        set( ${VAR} "mips" )
+      else()
+        set( ${VAR} "unknown" )
+      endif()
+    endmacro()
+  endif()
+
   # setup lists of camera libs
   foreach(abi ARMEABI ARMEABI_V7A X86 MIPS)
     ANDROID_GET_ABI_RAWNAME(${abi} ndkabi)