fix Makefile chmod (644)
replace MD5SUM with HASH
add PKG_MIRROR_HASH when PKG_SOURCE_PROTO:=git
(PKG_SOURCE_PROTO:=svn tarballs are not reproducible for now)
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
Fix missing `PKG_SOURCE` variable leading to a
`Download/default is missing the FILE field` error in the buildroot.
Also remove now uneeded variable as the default one matches the git clone
structure. Finally use the common variable assignment style for
`PKG_SOURCE_PROTO` and `PKG_SOURCE_VERSION`.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>