[PATCH 1/2] rust: time: doc: Add missing C header links

[Boqun Feng <boqun.feng@gmail.com>]

The definitions related to jiffies are at linux/jiffies.h, and the
definitions related to ktime_t are at linux/ktime.h, since
`kernel::time` provides the functionality dealing with jiffies and
ktime_t, it makes sense to add links to them from Rust's time module.

Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
---
 rust/kernel/time.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rust/kernel/time.rs b/rust/kernel/time.rs
index 6811d5cadbd4..e3bb5e89f88d 100644
--- a/rust/kernel/time.rs
+++ b/rust/kernel/time.rs
@@ -4,6 +4,9 @@
 //!
 //! This module contains the kernel APIs related to time and timers that
 //! have been ported or wrapped for usage by Rust code in the kernel.
+//!
+//! C header: [`include/linux/jiffies.h`](srctree/include/linux/jiffies.h).
+//! C header: [`include/linux/ktime.h`](srctree/include/linux/ktime.h).
 
 /// The number of nanoseconds per millisecond.
 pub const NSEC_PER_MSEC: i64 = bindings::NSEC_PER_MSEC as i64;
-- 
2.44.0