scripts: link-vmlinux: Don't pass page offset to kallsyms if XIP Kernel

When Kernel is executed in place from ROM, the symbol addresses can be
lower than the page offset.

Tested-by: Chanwoo Choi <[e-mail]>
Signed-off-by: Maxime Coquelin <[e-mail]>
Tested-by: Andreas Färber <[e-mail]>
Signed-off-by: Michal Marek <[e-mail]>

scripts/link-vmlinux.sh

···
 		kallsymopt="${kallsymopt} --all-symbols"
 	fi
 
-	if [ -n "${CONFIG_ARM}" ] && [ -n "${CONFIG_PAGE_OFFSET}" ]; then
+	if [ -n "${CONFIG_ARM}" ] && [ -z "${CONFIG_XIP_KERNEL}" ] && [ -n "${CONFIG_PAGE_OFFSET}" ]; then
 		kallsymopt="${kallsymopt} --page-offset=$CONFIG_PAGE_OFFSET"
 	fi