kconfig: Increase the size of KOBJECT_TEXT_AREA when NO_OPTIMIZATION

Since #14545 was merged building with USERSPACE and NO_OPTIMIZATIONS
has been broken due to #5226.

To fix #5226 we increase the size of KOBJECT_TEXT_AREA when
NO_OPTIMIZATIONS.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
diff --git a/arch/Kconfig b/arch/Kconfig
index ce0bb7b..9ca81d0 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -200,6 +200,7 @@
 config KOBJECT_TEXT_AREA
 	int "Size if kobject text area"
 	default 512 if COVERAGE_GCOV
+	default 512 if NO_OPTIMIZATIONS
 	default 256
 	depends on ARCH_HAS_USERSPACE
 	help