systemtap: remove usage of FILESPATH

Fixes [YOCTO #4497]

Usage of FILESPATH is discouraged, since it can make recipes harder to
bbappend. Instead FILESEXTRAPATHS should be used to extend the path.

(From OE-Core rev: 20de1b4d28f165593e86ee52211ebb595da4c01f)

Signed-off-by: Petter Mabäcker <petter@technux.se>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/systemtap/systemtap-uprobes_git.bb

@@ -11,6 +11,8 @@ ALLOW_EMPTY_${PN} = "1"
 
 inherit module-base gettext
 
+FILESEXTRAPATHS =. "${FILE_DIRNAME}/systemtap:"
+
 FILES_${PN} += "${datadir}/systemtap/runtime/uprobes"
 
 EXTRA_OEMAKE = ""

meta/recipes-kernel/systemtap/systemtap_git.inc

@@ -8,8 +8,6 @@ SRC_URI = "git://sourceware.org/git/systemtap.git \
            file://obsolete_automake_macros.patch \
           "
 
-FILESPATH = "${FILE_DIRNAME}/systemtap"
-
 # systemtap doesn't support mips
 COMPATIBLE_HOST = '(x86_64|i.86|powerpc|arm|aarch64).*-linux'