bus: firewall: Fix missing static inline annotations for stubs

BugLink: https://bugs.launchpad.net/bugs/2120812

commit 66db876162155c1cec87359cd78c62aaafde9257 upstream.

Stubs in the header file for !CONFIG_STM32_FIREWALL case should be both
static and inline, because they do not come with earlier declaration and
should be inlined in every unit including the header.

Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: stable@vger.kernel.org
Fixes: 5c9668c ("firewall: introduce stm32_firewall framework")
Link: https://lore.kernel.org/r/20250507092121.95121-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Noah Wager <noah.wager@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

Author: krzk

include/linux/bus/stm32_firewall_device.h

@@ -114,27 +114,30 @@ void stm32_firewall_release_access_by_id(struct stm32_firewall *firewall, u32 su
 
 #else /* CONFIG_STM32_FIREWALL */
 
-int stm32_firewall_get_firewall(struct device_node *np, struct stm32_firewall *firewall,
-				unsigned int nb_firewall)
+static inline int stm32_firewall_get_firewall(struct device_node *np,
+					      struct stm32_firewall *firewall,
+					      unsigned int nb_firewall)
 {
 	return -ENODEV;
 }
 
-int stm32_firewall_grant_access(struct stm32_firewall *firewall)
+static inline int stm32_firewall_grant_access(struct stm32_firewall *firewall)
 {
 	return -ENODEV;
 }
 
-void stm32_firewall_release_access(struct stm32_firewall *firewall)
+static inline void stm32_firewall_release_access(struct stm32_firewall *firewall)
 {
 }
 
-int stm32_firewall_grant_access_by_id(struct stm32_firewall *firewall, u32 subsystem_id)
+static inline int stm32_firewall_grant_access_by_id(struct stm32_firewall *firewall,
+						    u32 subsystem_id)
 {
 	return -ENODEV;
 }
 
-void stm32_firewall_release_access_by_id(struct stm32_firewall *firewall, u32 subsystem_id)
+static inline void stm32_firewall_release_access_by_id(struct stm32_firewall *firewall,
+						       u32 subsystem_id)
 {
 }