testsuite: Move ipcp-cb* from ipa to libgomp

This patch addresses the incorrectly placed tests, which fail if the
testsuite is ran and gcc has not been installed yet, as discussed
here:
https://gcc.gnu.org/pipermail/gcc-patches/2025-October/698095.html.

gcc/testsuite/ChangeLog:
	* gcc.dg/ipa/ipcp-cb-spec1.c: Moved to libgomp/testsuite/libgomp.c/.
	* gcc.dg/ipa/ipcp-cb-spec2.c: Likewise.
	* gcc.dg/ipa/ipcp-cb1.c: Likewise.
libgomp/ChangeLog:
	* testsuite/libgomp.c/ipcp-cb-spec1.c: Moved from
	gcc/testsuite/gcc.dg/ipa/.
	* testsuite/libgomp.c/ipcp-cb-spec2.c: Likewise.
	* testsuite/libgomp.c/ipcp-cb1.c: Likewise.

Signed-off-by: Josef Melcr <jmelcr02@gmail.com>

diff --git a/gcc/testsuite/gcc.dg/ipa/ipcp-cb-spec1.c b/libgomp/testsuite/libgomp.c/ipcp-cb-spec1.c
similarity index 100%
rename from gcc/testsuite/gcc.dg/ipa/ipcp-cb-spec1.c
rename to libgomp/testsuite/libgomp.c/ipcp-cb-spec1.c

diff --git a/gcc/testsuite/gcc.dg/ipa/ipcp-cb-spec2.c b/libgomp/testsuite/libgomp.c/ipcp-cb-spec2.c
similarity index 100%
rename from gcc/testsuite/gcc.dg/ipa/ipcp-cb-spec2.c
rename to libgomp/testsuite/libgomp.c/ipcp-cb-spec2.c

diff --git a/gcc/testsuite/gcc.dg/ipa/ipcp-cb1.c b/libgomp/testsuite/libgomp.c/ipcp-cb1.c
similarity index 100%
rename from gcc/testsuite/gcc.dg/ipa/ipcp-cb1.c
rename to libgomp/testsuite/libgomp.c/ipcp-cb1.c