musl: powerpc64: Fix definition of MAP_LOCKED and MAP_NORESERVE

powerpc and powerpc64 have different definitions for these in musl.
The powerpc values were correct, but powerpc64 ones were not.

This was changed in musl 1.1.17.

See https://git.musl-libc.org/cgit/musl/commit/?id=c10bc61508dc52b8315084e628f36a6c3c2dabb1

Signed-off-by: Jens Reidel <[email protected]>

(backport <#4516>)
(cherry picked from commit 5c0742b)

Author: Gelbpunkt

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

@@ -175,8 +175,8 @@ pub const MAP_ANON: c_int = 0x0020;
 pub const MAP_GROWSDOWN: c_int = 0x0100;
 pub const MAP_DENYWRITE: c_int = 0x0800;
 pub const MAP_EXECUTABLE: c_int = 0x01000;
-pub const MAP_LOCKED: c_int = 0x02000;
-pub const MAP_NORESERVE: c_int = 0x04000;
+pub const MAP_LOCKED: c_int = 0x80;
+pub const MAP_NORESERVE: c_int = 0x40;
 pub const MAP_POPULATE: c_int = 0x08000;
 pub const MAP_NONBLOCK: c_int = 0x010000;
 pub const MAP_STACK: c_int = 0x020000;