Kconfig: Move ELF_64BIT out of !BINFMT_DISABLE

Because it's also used by LIBC_MODLIB.

binfmt/Kconfig

@@ -10,6 +10,13 @@ config BINFMT_DISABLE
 		By default, support for loadable binary formats is built.  This logic
 		may be suppressed be defining this setting.
 
+config ELF_64BIT
+	bool "64bit ELF support"
+	default n
+	depends on (!BINFMT_DISABLE && ELF) || LIBC_MODLIB
+	---help---
+		This option is used to load 64bit ELF files
+
 if !BINFMT_DISABLE
 
 config PATH_INITIAL

binfmt/libelf/Kconfig

@@ -3,12 +3,6 @@
 # see the file kconfig-language.txt in the NuttX tools repository.
 #
 
-config ELF_64BIT
-	bool "64bit ELF support"
-	default n
-	---help---
-		This option is used to load 64bit ELF files
-
 config ELF_ALIGN_LOG2
 	int "Log2 Section Alignment"
 	default 2