[pkg-upd] 31-2.0

- add missing patch

revert-ab6bad7.patch

+--- b/man/mkinitcpio.conf.5.txt
++++ a/man/mkinitcpio.conf.5.txt
+@@ -52,11 +52,13 @@
+ 
+ *COMPRESSION*::
+ 
++	Defines a program to filter the generated image through. As of linux 2.6.38,
++	the kernel understands the compression formats yielded by the *gzip*, *bzip2*,
++	*lz4*, *lzop*, *lzma*, and *xz* compressors. As of linux 5.9 the kernel also
++	understands the compression formats yielded by the *zstd* compressor.
++	If unspecified, this setting defaults to *gzip* compression.
++	In order to create an uncompressed image, define
++	this variable as *cat*.
+-	Defines a program to filter the generated image through. The kernel
+-	understands the compression formats yielded by the *zstd*, *gzip*, *bzip2*,
+-	*lz4*, *lzop*, *lzma*, and *xz* compressors. If unspecified, this setting
+-	defaults to *zstd* compression. In order to create an uncompressed image,
+-	define this variable as *cat*.
+ +
+ It's not hard to realize that a filter such as a *tac* or *rev* will cause
+ *mkinitcpio* to report success but generate a useless image. Similarly, using a
+--- b/mkinitcpio
++++ a/mkinitcpio
+@@ -508,7 +508,7 @@
+         die 'Unable to write to %s' "$_optgenimg"
+     fi
+ 
++    _optcompress=${_optcompress:-${COMPRESSION:-gzip}}
+-    _optcompress=${_optcompress:-${COMPRESSION:-zstd}}
+     if ! type -P "$_optcompress" >/dev/null; then
+         warning "Unable to locate compression method: %s" "$_optcompress"
+         _optcompress=cat
+--- b/mkinitcpio.conf
++++ a/mkinitcpio.conf
+@@ -52,15 +52,15 @@
+ HOOKS=(base udev autodetect modconf block filesystems keyboard fsck)
+ 
+ # COMPRESSION
++# Use this to compress the initramfs image. By default, gzip compression
+-# Use this to compress the initramfs image. By default, zstd compression
+ # is used. Use 'cat' to create an uncompressed image.
+-#COMPRESSION="zstd"
+ #COMPRESSION="gzip"
+ #COMPRESSION="bzip2"
+ #COMPRESSION="lzma"
+ #COMPRESSION="xz"
+ #COMPRESSION="lzop"
+ #COMPRESSION="lz4"
++#COMPRESSION="zstd"
+ 
+ # COMPRESSION_OPTIONS
+ # Additional options for the compressor