meta-nuvoton: npcm8xx-igps: remove bash-ism

The `{A,B}` expansion syntax is a bash extension which isn't supported
on some other shells.

Tested: Built successfully with non-bash shell
Signed-off-by: Benjamin Fair <benjaminfair@google.com>
Change-Id: Iae3168e0699d0e399b0f1dcfbd978dcc16aadbf5
diff --git a/meta-nuvoton/recipes-bsp/images/npcm8xx-igps.inc b/meta-nuvoton/recipes-bsp/images/npcm8xx-igps.inc
index 5d64d17..3906a8c 100644
--- a/meta-nuvoton/recipes-bsp/images/npcm8xx-igps.inc
+++ b/meta-nuvoton/recipes-bsp/images/npcm8xx-igps.inc
@@ -15,7 +15,8 @@
 
 # Adjust paths for use with bitbake
 do_patch() {
-	sed -i -e 's,inputs/,,g' ${S}/py_scripts/ImageGeneration/{references,inputs}/*.xml
+	sed -i -e 's,inputs/,,g' ${S}/py_scripts/ImageGeneration/references/*.xml \
+		${S}/py_scripts/ImageGeneration/inputs/*.xml
 }
 
 do_install() {