linker: kobject-text.ld: avoid backwards location counter

when kobject text area is greater than CONFIG_KOBJECT_TEXT_AREA,
there will be location counter backwards, change it to assert to
prompt configuring CONFIG_KOBJECT_TEXT_AREA larger.

Fixes: #16307.

Signed-off-by: Wentong Wu <wentong.wu@intel.com>
1 file changed