ynl: add regen hint to new headers

Recent commit 68e83f3472 ("tools: ynl-gen: add regeneration comment")
added a hint how to regenerate the code to the headers. Update
the new headers from this release cycle to also include it.

Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251207004740.1657799-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

include/uapi/linux/energy_model.h

@@ -2,6 +2,7 @@
 /* Do not edit directly, auto-generated from: */
 /*	Documentation/netlink/specs/em.yaml */
 /* YNL-GEN uapi header */
+/* To regenerate run: tools/net/ynl/ynl-regen.sh */
 
 #ifndef _UAPI_LINUX_ENERGY_MODEL_H
 #define _UAPI_LINUX_ENERGY_MODEL_H

kernel/power/em_netlink_autogen.c

@@ -2,6 +2,7 @@
 /* Do not edit directly, auto-generated from: */
 /*	Documentation/netlink/specs/em.yaml */
 /* YNL-GEN kernel source */
+/* To regenerate run: tools/net/ynl/ynl-regen.sh */
 
 #include <net/netlink.h>
 #include <net/genetlink.h>

kernel/power/em_netlink_autogen.h

@@ -2,6 +2,7 @@
 /* Do not edit directly, auto-generated from: */
 /*	Documentation/netlink/specs/em.yaml */
 /* YNL-GEN kernel header */
+/* To regenerate run: tools/net/ynl/ynl-regen.sh */
 
 #ifndef _LINUX_EM_GEN_H
 #define _LINUX_EM_GEN_H