[PATCH] firmware_loader: fix build without sysctl

[Matteo Croce]

firmware_config_table has references to the sysctl code which
triggers a build failure when CONFIG_PROC_SYSCTL is not set:

    ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x30): undefined 
reference to `sysctl_vals'
    ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x38): undefined 
reference to `sysctl_vals'
    ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x70): undefined 
reference to `sysctl_vals'
    ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x78): undefined 
reference to `sysctl_vals'

Put the firmware_config_table struct under #ifdef CONFIG_PROC_SYSCTL.

Fixes: 6a33853c5773 ("proc/sysctl: add shared variables for range check")
Reported-by: Randy Dunlap <rdun...@infradead.org>
Signed-off-by: Matteo Croce <mcr...@redhat.com>
---
 drivers/base/firmware_loader/fallback_table.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/base/firmware_loader/fallback_table.c 
b/drivers/base/firmware_loader/fallback_table.c
index 58d4a1263480..18d646777fb9 100644
--- a/drivers/base/firmware_loader/fallback_table.c
+++ b/drivers/base/firmware_loader/fallback_table.c
@@ -23,6 +23,8 @@ struct firmware_fallback_config fw_fallback_config = {
 };
 EXPORT_SYMBOL_GPL(fw_fallback_config);
 
+#ifdef CONFIG_PROC_SYSCTL
+
 struct ctl_table firmware_config_table[] = {
        {
                .procname       = "force_sysfs_fallback",
@@ -45,3 +47,5 @@ struct ctl_table firmware_config_table[] = {
        { }
 };
 EXPORT_SYMBOL_GPL(firmware_config_table);
+
+#endif
-- 
2.21.0