mtd-utils: update to 2.1.5

Release Notes:
https://lore.kernel.org/buildroot/c0992bbb-9487-9a51-ea9f-39cf074b61ec@sigma-star.at/

Refresh patches:
- 130-lzma_jffs2.patch

Signed-off-by: Nick Hainke <vincent@systemli.org>

package/utils/mtd-utils/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=mtd-utils
-PKG_VERSION:=2.1.4
+PKG_VERSION:=2.1.5
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=https://infraroot.at/pub/mtd/
-PKG_HASH:=2c6711d15d282c47cb3867b6857340597e26d332c238465134c602e5eef71b99
+PKG_HASH:=386e27fd121699b6b729bc2e8e04dda987b31cca6b16e12fb6cc6dcf26449f46
 
 PKG_INSTALL:=1
 PKG_FIXUP:=autoreconf

package/utils/mtd-utils/patches/130-lzma_jffs2.patch

@@ -5020,7 +5020,7 @@
 +}
 --- a/jffsX-utils/mkfs.jffs2.c
 +++ b/jffsX-utils/mkfs.jffs2.c
-@@ -1667,11 +1667,11 @@ int main(int argc, char **argv)
+@@ -1668,11 +1668,11 @@ int main(int argc, char **argv)
  						  }
  						  erase_block_size *= units;