[][openwrt][common][Fix build error in libkcapi]

[Description]
Fix patches build failed, filename bug.

[Release-log]

Change-Id: I4bc45295a2bc7a9284447ad425a4a8f0f2242478
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8445419
diff --git a/feed/libkcapi/patches/0002-add-command-to-test-hmac-sha.patch b/feed/libkcapi/patches/0002-add-command-to-test-hmac-sha.patch
index 25a4e63..3e1751a 100644
--- a/feed/libkcapi/patches/0002-add-command-to-test-hmac-sha.patch
+++ b/feed/libkcapi/patches/0002-add-command-to-test-hmac-sha.patch
@@ -1,5 +1,5 @@
---- a/libkcapi/Makefile.am
-+++ b/libkcapi/Makefile.am
+--- a/Makefile.am
++++ b/Makefile.am
 @@ -229,6 +229,16 @@ EXTRA_bin_kcapi_dgst_DEPENDENCIES = libt
  
  SCAN_FILES += $(bin_kcapi_dgst_SOURCES)
@@ -18,7 +18,7 @@
  
  if HAVE_CLANG
 --- /dev/null
-+++ b/libkcapi/apps/kcapi-mtk-dgst.c
++++ b/apps/kcapi-mtk-dgst.c
 @@ -0,0 +1,287 @@
 +// SPDX-License-Identifier: BSD-2-Clause
 +/*