[PATCH] ARC:fpu: add extra capability check before use of sqrt and fma builtins

[Pavel Kozlov]

> This is wrong, sqrt use macro do not belong for the fma switch file.

Thank you for the review and your notice. I was inattentive when 
moving changes from the branch I had. This has been fixed in
v2 of the patch [1].
I've manually checked (by objdump -d output review) that now 
expected code for libm is generated in different cases (when compiler 
provides support for extra instructions and sets macroses 
__ARC_FPU_DP_DIV__, __ARC_FPU_SP_DIV__, __ARC_FPU_DP_FMA__, 
__ARC_FPU_SP_FMA__ and when not).

[1]
http://lists.infradead.org/pipermail/linux-snps-arc/2023-January/006771.html

--
Pavel