rust-cross: Add rust-crosssdk variant for nativesdk use

Allow nativesdk recipes to find a correct version of the rust cross
compiler.

(From OE-Core rev: 0f5d26772abfbbae9096fa43901d8620f76aea3c)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/rust/rust-cross.inc

@@ -1,6 +1,3 @@
-require rust.inc
-inherit cross
-
 python do_rust_gen_targets () {
     wd = d.getVar('WORKDIR') + '/targets/'
     # It is important 'TARGET' is last here so that it overrides our less
@@ -30,12 +27,8 @@ INHIBIT_DEFAULT_RUST_DEPS = "1"
 # so it might make sense to take it's mapping. For now, though, we just mention
 # the bits we need explicitly.
 DEPENDS += "rust-llvm-native"
-DEPENDS += "virtual/${TARGET_PREFIX}gcc virtual/${TARGET_PREFIX}compilerlibs virtual/libc"
 DEPENDS += "rust-native"
 
-PROVIDES = "virtual/${TARGET_PREFIX}rust"
-PN = "rust-cross-${TUNE_PKGARCH}-${TCLIBC}"
-
 # In the cross compilation case, rustc doesn't seem to get the rpath quite
 # right. It manages to include '../../lib/${TARGET_PREFIX}', but doesn't
 # include the '../../lib' (ie: relative path from cross_bindir to normal

meta/recipes-devtools/rust/rust-cross_1.59.0.bb

@@ -1,2 +1,8 @@
+require rust.inc
+inherit cross
 require rust-cross.inc
 require rust-source.inc
+
+DEPENDS += "virtual/${TARGET_PREFIX}gcc virtual/${TARGET_PREFIX}compilerlibs virtual/libc"
+PROVIDES = "virtual/${TARGET_PREFIX}rust"
+PN = "rust-cross-${TUNE_PKGARCH}-${TCLIBC}"

meta/recipes-devtools/rust/rust-crosssdk_1.59.0.bb

@@ -0,0 +1,8 @@
+require rust.inc
+inherit crosssdk
+require rust-cross.inc
+require rust-source.inc
+
+DEPENDS += "virtual/${TARGET_PREFIX}gcc-crosssdk virtual/nativesdk-${TARGET_PREFIX}compilerlibs virtual/nativesdk-libc"
+PROVIDES = "virtual/nativesdk-${TARGET_PREFIX}rust"
+PN = "rust-crosssdk-${TUNE_PKGARCH}-${TCLIBC}"