aarch64/a53_ilp32_qemu: implicit declaration of function 'truncl'

[Sebastian Huber]

Hello Kinsey,

the new aarch64/a53_ilp32_qemu produces a lot of warnings like this:

../../../testsuites/psxtests/psxhdrs/math/truncl.c:45:12: warning: 
implicit declaration of function 'truncl' [-Wimplicit-function-declaration]
../../../testsuites/psxtests/psxhdrs/math/truncl.c:45:12: warning: 
incompatible implicit declaration of built-in function 'truncl'

Is this a known issue?