package/petitboot: fix menu comment

The comment should appear if threads aren't enabled, not when they are.

Signed-off-by: Reza Arbab <arbab@linux.ibm.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
(cherry picked from commit 4954b5140e17f298a32a8537ed2948351dc4f5b1)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/petitboot/Config.in

@@ -26,6 +26,6 @@ comment "petitboot needs a uClibc or glibc toolchain w/ wchar, dynamic library,
 	depends on BR2_PACKAGE_KEXEC_ARCH_SUPPORTS
 	depends on BR2_USE_MMU
 	depends on !BR2_USE_WCHAR || BR2_STATIC_LIBS || \
-		BR2_TOOLCHAIN_HAS_THREADS || \
+		!BR2_TOOLCHAIN_HAS_THREADS || \
 		!(BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC) || \
 		!BR2_PACKAGE_HAS_UDEV