libstd-rs,rust-cross-canadian: set CVE_PRODUCT to rust

These recipes come from rust sources and CVEs are reported for them
under rust-lang:rust vendor:product touple.
Especially libstd-rs needs correct CVE_PRODUCT as is it installed on
target devices (being statically linked to rust compiled binaries).

before:
cargo: CVE_PRODUCT="cargo"
cargo-c-native: CVE_PRODUCT="cargo-c"
libstd-rs: CVE_PRODUCT="libstd-rs"
rust: CVE_PRODUCT="rust"
rust-cross-canadian: CVE_PRODUCT="rust-cross-canadian-<arch>"
rust-llvm: CVE_PRODUCT="rust-llvm"

after:
cargo: CVE_PRODUCT="cargo"
cargo-c-native: CVE_PRODUCT="cargo-c"
libstd-rs: CVE_PRODUCT="rust"
rust: CVE_PRODUCT="rust"
rust-cross-canadian-x86-64: CVE_PRODUCT="rust"
rust-llvm: CVE_PRODUCT="rust-llvm"

Product for rust-llvm is uncertain and, should be handled in another
commit if it is desired to align it, too.

sqlite> select vendor, product, count(product) from products where vendor="rust-lang" group by product;
rust-lang|async-h1|2
rust-lang|cargo|5
rust-lang|future-utils|2
rust-lang|futures-task|2
rust-lang|mdbook|1
rust-lang|regex|2
rust-lang|rsa|2
rust-lang|rust|45
rust-lang|socket2|1

(From OE-Core rev: 91bfe1f64ee3e2b8534baa8a3eb2fb7fa3521657)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit e8cf1df16a6ec2785cacaf608bec5cd8496103af)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-devtools/rust/libstd-rs_1.75.0.bb

@@ -15,6 +15,8 @@ S = "${RUSTSRC}/library/sysroot"
 RUSTLIB_DEP = ""
 inherit cargo
 
+CVE_PRODUCT = "rust"
+
 DEPENDS:append:libc-musl = " libunwind"
 # rv32 does not have libunwind ported yet
 DEPENDS:remove:riscv32 = "libunwind"

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

@@ -1,5 +1,6 @@
 SUMMARY = "Rust compiler and runtime libaries (cross-canadian for ${TARGET_ARCH} target)"
 PN = "rust-cross-canadian-${TRANSLATED_TARGET_ARCH}"
+CVE_PRODUCT = "rust"
 
 inherit rust-target-config
 inherit rust-common