kbuild: Support generated asm-headers in subdirectories

Extend the asm-header stub generation to also handle subdirectories.
An upcoming vdso/ header refactoring requires this.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Link: https://patch.msgid.link/20260724-vdso-arch-clockmodes-v4-1-ddbe447be860@linutronix.de
This commit is contained in:
Thomas Weißschuh 2026-07-24 15:36:18 +02:00 • committed by Thomas Gleixner
commit 2d69b891e6