RISC-V: Fix a comment typo.

	* config/riscv/riscv.c (riscv_interrupt_type): Fix comment typo.

From-SVN: r260907

gcc/ChangeLog

+2018-05-29  Jim Wilson  <jimw@sifive.com>
+
+	* config/riscv/riscv.c (riscv_interrupt_type): Fix comment typo.
+
 2018-05-29  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/85950

gcc/config/riscv/riscv.c

@@ -2721,7 +2721,7 @@ riscv_handle_fndecl_attribute (tree *node, tree name,
   return NULL_TREE;
 }
 
-/* Return true if funcion TYPE is an interrupt function.  */
+/* Return true if function TYPE is an interrupt function.  */
 static bool
 riscv_interrupt_type_p (tree type)
 {