busybox: Exclude .debug from depmod

As with the kmod version of depmod, exclude .debug from being
searched. Since busybox does not use the depmod.d and any
configuration file option is ignored we just hardcode it.

(From OE-Core rev: c082752c06d5723433886cbf7ce2d88a51fb64f1)

Signed-off-by: Saul Wold <saul.wold@windriver.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/busybox/busybox/0001-depmod-Ignore-.debug-directories.patch

@@ -0,0 +1,32 @@
+From 5f6ed003f10ee0bd4a508d5f59129a29f0920dfc Mon Sep 17 00:00:00 2001
+From: Saul Wold <saul.wold@windriver.com>
+Date: Thu, 31 Mar 2022 11:21:45 -0700
+Subject: [PATCH] depmod: Ignore .debug directories
+
+The .debug/<module>.ko files do not have the correct symbol information
+since it's split away from the actual <module>.ko file. Just ignore it.
+
+Upstream-Status: Pending
+
+Signed-off-by: Saul Wold <saul.wold@windriver.com>
+---
+ modutils/depmod.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/modutils/depmod.c b/modutils/depmod.c
+index bb42bbe..aa5a2de 100644
+--- a/modutils/depmod.c
++++ b/modutils/depmod.c
+@@ -43,6 +43,9 @@ static int FAST_FUNC parse_module(struct recursive_state *state,
+ 	/* Arbitrary. Was sb->st_size, but that breaks .gz etc */
+ 	size_t len = (64*1024*1024 - 4096);
+ 
++	if (strstr(fname, ".debug") == NULL)
++		return TRUE;
++
+ 	if (strrstr(fname, ".ko") == NULL)
+ 		return TRUE;
+ 
+-- 
+2.31.1
+

meta/recipes-core/busybox/busybox_1.35.0.bb

@@ -1,6 +1,7 @@
 require busybox.inc
 
 SRC_URI = "https://busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
+           file://0001-depmod-Ignore-.debug-directories.patch \
            file://busybox-udhcpc-no_deconfig.patch \
            file://find-touchscreen.sh \
            file://busybox-cron \