add multiarch support for pkgconfig files

The pkgconfig are just template in the source, the cmake would
generate the final pkgconfig files.

pkgconfig/egl.pc

@@ -1,12 +0,0 @@
-prefix=/usr
-exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include
-
-Name: egl
-Description: Mali OpenEGL library
-Requires.private: 
-Version: 7.10
-Libs: -L${libdir} -lEGL
-Libs.private:   -lm -lpthread
-Cflags: -I${includedir} 

pkgconfig/egl.pc.cmake

@@ -0,0 +1,12 @@
+prefix=/usr
+exec_prefix=${prefix}
+libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+
+Name: egl
+Description: Mali EGL library
+Requires.private: 
+Version: 7.10
+Libs: -L${libdir} -lEGL
+Libs.private: -lm -lpthread
+Cflags: -I${includedir} 

pkgconfig/gbm.pc.cmake

@@ -1,7 +1,7 @@
 prefix=/usr
 exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include
+libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
 
 Name: gbm
 Description: Mali GBM library

pkgconfig/glesv2.pc

@@ -1,12 +0,0 @@
-prefix=/usr
-exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include
-
-Name: glesv2
-Description: GLESV@ library
-Requires.private:
-Version:
-Libs: -L/lib -lGLESv2
-Libs.private:   -lm -lpthread
-Cflags: -I${includedir} 

pkgconfig/glesv2.pc.cmake

@@ -0,0 +1,12 @@
+prefix=/usr
+exec_prefix=${prefix}
+libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+
+Name: glesv2
+Description: mali GLESV2 library
+Requires.private:
+Version:
+Libs: -L${libdir} -lGLESv2
+Libs.private: -lm -lpthread
+Cflags: -I${includedir}