[builtins] Avoid using long double in FreeBSD standalone environment (#76175)

After 05a4212 a number of long double related declarations are
enabled in `int_types.h`, whenever the CPU architecture and platform
support it. However, this does not work with FreeBSD's standalone
environment, which disallows any use of floating point.

In add98b2 this was made conditional with `CRT_HAS_FLOATING_POINT`,
so extend the block guarded by that define to include all floating point
related declarations.

Author: DimitryAndric

compiler-rt/lib/builtins/int_types.h

@@ -139,7 +139,6 @@ typedef union {
   udwords u;
   double f;
 } double_bits;
-#endif
 
 typedef struct {
 #if _YUGA_LITTLE_ENDIAN
@@ -220,7 +219,6 @@ typedef union {
 #define CRT_HAS_TF_MODE
 #endif
 
-#if CRT_HAS_FLOATING_POINT
 #if __STDC_VERSION__ >= 199901L
 typedef float _Complex Fcomplex;
 typedef double _Complex Dcomplex;
@@ -270,5 +268,5 @@ typedef struct {
 #define COMPLEXTF_IMAGINARY(x) (x).imaginary
 #endif
 
-#endif
+#endif // CRT_HAS_FLOATING_POINT
 #endif // INT_TYPES_H