regulator: Resolve section mismatches

Some SODP devices (e.g. seine), would fail to build with similar,
straightforward warnings:

WARNING: vmlinux.o(___ksymtab+regulator_stub_init+0x0): Section mismatch in
reference from the variable __ksymtab_regulator_stub_init to the function
.init.text:regulator_stub_init() The symbol regulator_stub_init is exported
and annotated __init Fix this by removing the __init annotation of
regulator_stub_init or drop the export.

Follow the instructions provided by the failing builds to allow it to
finish.

Signed-off-by: voidanix <voidanix@keyedlimepie.org>

drivers/regulator/qpnp-regulator.c

@@ -2574,7 +2574,6 @@ int __init qpnp_regulator_init(void)
 
 	return platform_driver_register(&qpnp_regulator_driver);
 }
-EXPORT_SYMBOL(qpnp_regulator_init);
 
 static void __exit qpnp_regulator_exit(void)
 {

drivers/regulator/rpm-smd-regulator.c

@@ -2042,7 +2042,7 @@ static struct platform_driver rpm_vreg_resource_driver = {
  *
  * Returns 0 on success or errno on failure.
  */
-int __init rpm_smd_regulator_driver_init(void)
+static int __init rpm_smd_regulator_driver_init(void)
 {
 	static bool initialized;
 	int i, rc;
@@ -2065,7 +2065,6 @@ int __init rpm_smd_regulator_driver_init(void)
 	initialized = true;
 	return 0;
 }
-EXPORT_SYMBOL(rpm_smd_regulator_driver_init);
 
 static void __exit rpm_vreg_exit(void)
 {

drivers/regulator/stub-regulator.c

@@ -293,7 +293,6 @@ int __init regulator_stub_init(void)
 
 	return platform_driver_register(&regulator_stub_driver);
 }
-EXPORT_SYMBOL(regulator_stub_init);
 postcore_initcall(regulator_stub_init);
 
 static void __exit regulator_stub_exit(void)

include/linux/regulator/rpm-smd-regulator.h

@@ -106,8 +106,6 @@ int rpm_regulator_set_voltage(struct rpm_regulator *regulator, int min_uV,
 int rpm_regulator_set_mode(struct rpm_regulator *regulator,
 				enum rpm_regulator_mode mode);
 
-int __init rpm_smd_regulator_driver_init(void);
-
 #else
 
 static inline struct rpm_regulator *rpm_regulator_get(struct device *dev,
@@ -127,8 +125,6 @@ static inline int rpm_regulator_set_voltage(struct rpm_regulator *regulator,
 static inline int rpm_regulator_set_mode(struct rpm_regulator *regulator,
 				enum rpm_regulator_mode mode) { return 0; }
 
-static inline int __init rpm_smd_regulator_driver_init(void) { return 0; }
-
 #endif /* CONFIG_REGULATOR_RPM_SMD */
 
 #endif