security/vboot: Remove useless 'const'

Change-Id: I3b5ca272abffe46c6a63251cf4905780f87a6836
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33540
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Joel Kitching <kitching@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/security/vboot/common.c b/src/security/vboot/common.c
index 8f8165a..bd72683 100644
--- a/src/security/vboot/common.c
+++ b/src/security/vboot/common.c
@@ -24,7 +24,7 @@
 #include <security/vboot/symbols.h>
 #include <security/vboot/vboot_common.h>
 
-struct vboot_working_data * const vboot_get_working_data(void)
+struct vboot_working_data *vboot_get_working_data(void)
 {
 	struct vboot_working_data *wd = NULL;
 
diff --git a/src/security/vboot/misc.h b/src/security/vboot/misc.h
index acb6dbb..725f5fd 100644
--- a/src/security/vboot/misc.h
+++ b/src/security/vboot/misc.h
@@ -53,7 +53,7 @@
 /*
  * Source: security/vboot/common.c
  */
-struct vboot_working_data * const vboot_get_working_data(void);
+struct vboot_working_data *vboot_get_working_data(void);
 void vboot_init_work_context(struct vb2_context *ctx);
 void vboot_finalize_work_context(struct vb2_context *ctx);
 struct vb2_shared_data *vboot_get_shared_data(void);