[Skiboot] [PATCH trivial] fsp: Fix sparse warning

[Vasant Hegde]

platforms/ibm-fsp/common.c:252:17: error: symbol 'fsp_heartbeat_time' redeclared with different type (different modifiers):
platforms/ibm-fsp/common.c:252:17:    int extern [addressable] [pure] [signed] [toplevel] fsp_heartbeat_time( ... )
platforms/ibm-fsp/common.c: note: in included file:
platforms/ibm-fsp/ibm-fsp.h:40:5: note: previously declared as:
platforms/ibm-fsp/ibm-fsp.h:40:5:    int extern [addressable] [signed] [toplevel] fsp_heartbeat_time( ... )

Signed-off-by: Vasant Hegde <hegdevasant at linux.vnet.ibm.com>
---
 platforms/ibm-fsp/ibm-fsp.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platforms/ibm-fsp/ibm-fsp.h b/platforms/ibm-fsp/ibm-fsp.h
index c21866912..bb191645c 100644
--- a/platforms/ibm-fsp/ibm-fsp.h
+++ b/platforms/ibm-fsp/ibm-fsp.h
@@ -37,7 +37,7 @@ void vpd_iohub_load(struct dt_node *hub_node);
 void vpd_preload(struct dt_node *hub_node);
 
 /* Platform heartbeat time */
-int fsp_heartbeat_time(void);
+int __attrconst fsp_heartbeat_time(void);
 
 extern struct platform_psi fsp_platform_psi;
 extern struct platform_prd fsp_platform_prd;
-- 
2.31.1