math: no reason to depend on special architecture

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>

extra/Configs/Config.in.arch

@@ -191,12 +191,10 @@ config UCLIBC_HAS_FENV
 config UCLIBC_HAS_LONG_DOUBLE_MATH
 	bool "Enable long double support"
 	depends on DO_C99_MATH
-	depends on TARGET_alpha || TARGET_i386 || TARGET_ia64 || TARGET_m68k || TARGET_powerpc || TARGET_s390 || TARGET_sparc || TARGET_tile || TARGET_x86_64
 	default y
 	help
 	  If you want the uClibc math library to contain the full set of C99
-	  long double math library features, then answer Y. Don't enable it
-	  for sparc w/ 32bit ABI.
+	  long double math library features, then answer Y.
 
 config KERNEL_HEADERS
 	string "Linux kernel header location"