sp_min: make sp_min_warm_entrypoint public

Similar to bl31_warm_entrypoint, sp_min-based platforms may need
that for special resume handling.

Therefore move it from the private header to the sp_min platform header.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Change-Id: I40d9eb3ff77cff88d47c1ff51d53d9b2512cbd3e

bl32/sp_min/sp_min_private.h

@@ -7,7 +7,6 @@
 #ifndef SP_MIN_PRIVATE_H
 #define SP_MIN_PRIVATE_H
 
-void sp_min_warm_entrypoint(void);
 void sp_min_main(void);
 void sp_min_warm_boot(void);
 void sp_min_fiq(void);

include/bl32/sp_min/platform_sp_min.h

@@ -18,6 +18,7 @@ void sp_min_platform_setup(void);
 void sp_min_plat_runtime_setup(void);
 void sp_min_plat_arch_setup(void);
 entry_point_info_t *sp_min_plat_get_bl33_ep_info(void);
+void sp_min_warm_entrypoint(void);
 
 /* Platforms that enable SP_MIN_WITH_SECURE_FIQ shall implement this api */
 void sp_min_plat_fiq_handler(uint32_t id);