musl: powerpc64: Fix definition of EDEADLK

musl defines EDEADLK to be 35 on powerpc64 and EDEADLOCK to be 58.

This has always been the case since the introduction of powerpc64
support in musl.

See:
https://git.musl-libc.org/cgit/musl/tree/arch/powerpc64/bits/errno.h#n35
https://git.musl-libc.org/cgit/musl/tree/arch/powerpc64/bits/errno.h#n58

Signed-off-by: Jens Reidel <adrian@travitia.xyz>

Author: Gelbpunkt

src/unix/linux_like/linux/musl/b64/powerpc64.rs

@@ -641,8 +641,8 @@ pub const SYS_process_mrelease: c_long = 448;
 pub const SYS_futex_waitv: c_long = 449;
 pub const SYS_set_mempolicy_home_node: c_long = 450;
 
-pub const EDEADLK: c_int = 58;
-pub const EDEADLOCK: c_int = EDEADLK;
+pub const EDEADLK: c_int = 35;
+pub const EDEADLOCK: c_int = 58;
 
 pub const EXTPROC: crate::tcflag_t = 0x10000000;
 pub const VEOL: usize = 6;