AArch64: relax cbranch tests to accepted inverted branches [PR113502]

AArch64: relax cbranch tests to accepted inverted branches [PR113502]

Recently something in the midend had started inverting the branches by inverting
the condition and the branches.

While this is fine, it makes it hard to actually test.  In RTL I disable
scheduling and BB reordering to prevent this.  But in GIMPLE there seems to be
nothing I can do.  __builtin_expect seems to have no impact on the change since
I suspect this is happening during expand where conditions can be flipped
regardless of probability during compare_and_branch.

Since the mid-end has plenty of correctness tests, this weakens the backend
tests to just check that a correct looking sequence is emitted.

gcc/testsuite/ChangeLog:

	PR testsuite/113502
	* gcc.target/aarch64/sve/vect-early-break-cbranch.c: Ignore exact branch.
	* gcc.target/aarch64/vect-early-break-cbranch.c: Likewise.