Fix gcc.target/aarch64/movk.c testcase after IPA-VRP improvement for return values

Fix gcc.target/aarch64/movk.c testcase after IPA-VRP improvement for return values

The problem here is dummy_number_generator returns a constant which IPA VRP is now able
propagate that so we need to mark the funciton as noipa to stop that.

gcc/testsuite/ChangeLog:

	PR testsuite/112688
	* gcc.target/aarch64/movk.c: Add noipa on dummy_number_generator
	and remove -fno-inline option.

Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>