[Bug testsuite/125966] rs6000: fp128_conversions.c and int_128bit-runnable.c fail on powerpc32

[mmatti at linux dot vnet.ibm.com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125966

--- Comment #2 from Manjunath S Matti <mmatti at linux dot vnet.ibm.com> ---
This bug blocks PR125965, its part of a list of failures on PPC64 (big endian)
Power10. IBM want these to be fixed!