[ARM] FDPIC: New tests.
    
    2018-XX-XX  Christophe Lyon  <christophe.lyon@st.com>
    	Mickaël Guêné  <mickael.guene@st.com>
    
    	ld/
    	* testsuite/ld-arm/arm-elf.exp: Execute the new FDPIC tests.
    	* testsuite/ld-arm/fdpic-main.d: New test.
    	* testsuite/ld-arm/fdpic-main.ld: New.
    	* testsuite/ld-arm/fdpic-main.r: New.
    	* testsuite/ld-arm/fdpic-main.s: New.
    	* testsuite/ld-arm/fdpic-main.sym: New.
    	* testsuite/ld-arm/fdpic-shared.d: New test.
    	* testsuite/ld-arm/fdpic-shared.ld: New.
    	* testsuite/ld-arm/fdpic-shared.r: New.
    	* testsuite/ld-arm/fdpic-shared.s: New.
    	* testsuite/ld-arm/fdpic-shared.sym: New.