In FDPIC mode, r9 is saved in addition to other registers, so update
the expected patterns accordingly.

2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
	Mickaël Guêné <mickael.guene@st.com>

	gcc/testsuite/
	* gcc.target/arm/interrupt-1.c: Add scan-assembler pattern for
	arm*-*-uclinuxfdpiceabi.
	* gcc.target/arm/interrupt-2.c: Likewise.
	* gcc.target/arm/pr70830.c: Likewise.


Co-Authored-By: Mickaël Guêné <mickael.guene@st.com>

From-SVN: r275577