gdb/riscv: Make some target description functions constant

Makes more of the interface related to fetching target descriptions
constant.

gdb/ChangeLog:

	* arch/riscv.h (riscv_create_target_description): Make return type
	const.
	* arch/riscv.c (riscv_create_target_description): Likewise.
	* riscv-tdep.c (riscv_find_default_target_description): Likewise.

2 files changed, 2 insertions, 2 deletions

diff --git a/gdb/arch/riscv.c b/gdb/arch/riscv.c
index ca2238d..cb715fa 100644
--- a/gdb/arch/riscv.c
+++ b/gdb/arch/riscv.c
@@ -26,7 +26,7 @@
 
 /* See arch/riscv.h.  */
 
-target_desc *
+const target_desc *
 riscv_create_target_description (struct riscv_gdbarch_features features)
 {
   target_desc *tdesc = allocate_target_description ();
diff --git a/gdb/arch/riscv.h b/gdb/arch/riscv.h
index 0079440..ec4d5f3 100644
--- a/gdb/arch/riscv.h
+++ b/gdb/arch/riscv.h
@@ -58,7 +58,7 @@ struct riscv_gdbarch_features
 /* Create and return a target description that is compatible with
    FEATURES.  */
 
-target_desc *riscv_create_target_description
+const target_desc *riscv_create_target_description
 	(struct riscv_gdbarch_features features);
 
 #endif /* ARCH_RISCV_H */