riscv: fix styling in ucontext header

Change the two comments in ucontext.h by getting them up to
the coding style proposed by torvalds.

Signed-off-by: Cleo John <waterdev@galaxycrow.de>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20221010182848.GA28029@watet-ms7b87
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

arch/riscv/include/uapi/asm/ucontext.h

@@ -15,19 +15,23 @@ struct ucontext {
 	struct ucontext	 *uc_link;
 	stack_t		  uc_stack;
 	sigset_t	  uc_sigmask;
-	/* There's some padding here to allow sigset_t to be expanded in the
+	/*
+	 * There's some padding here to allow sigset_t to be expanded in the
 	 * future.  Though this is unlikely, other architectures put uc_sigmask
 	 * at the end of this structure and explicitly state it can be
-	 * expanded, so we didn't want to box ourselves in here. */
+	 * expanded, so we didn't want to box ourselves in here.
+	 */
 	__u8		  __unused[1024 / 8 - sizeof(sigset_t)];
-	/* We can't put uc_sigmask at the end of this structure because we need
+	/*
+	 * We can't put uc_sigmask at the end of this structure because we need
 	 * to be able to expand sigcontext in the future.  For example, the
 	 * vector ISA extension will almost certainly add ISA state.  We want
 	 * to ensure all user-visible ISA state can be saved and restored via a
 	 * ucontext, so we're putting this at the end in order to allow for
 	 * infinite extensibility.  Since we know this will be extended and we
 	 * assume sigset_t won't be extended an extreme amount, we're
-	 * prioritizing this. */
+	 * prioritizing this.
+	 */
 	struct sigcontext uc_mcontext;
 };