rust: Split rustdoc into a separate package

The 'rustdoc' is moved to a separate 'rust-rustdoc' package. This is a
workaround to test if the main rust binary is reproducible even if
rustdoc isn't.

(From OE-Core rev: dfed7e63e199009ecca8e2e34f6a823c6e1677e0)

Signed-off-by: Sundeep KOKKONDA <sundeep.kokkonda@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/cases/reproducible.py

@@ -16,7 +16,7 @@ import os
 import datetime
 
 exclude_packages = [
-	'rust',
+	'rust-rustdoc',
 	'rust-dbg'
 	]
 

meta/recipes-devtools/rust/rust_1.70.0.bb

@@ -232,9 +232,11 @@ do_test_compile () {
 
 ALLOW_EMPTY:${PN} = "1"
 
-PACKAGES =+ "${PN}-tools-clippy ${PN}-tools-rustfmt"
+PACKAGES =+ "${PN}-rustdoc ${PN}-tools-clippy ${PN}-tools-rustfmt"
+FILES:${PN}-rustdoc = "${bindir}/rustdoc"
 FILES:${PN}-tools-clippy = "${bindir}/cargo-clippy ${bindir}/clippy-driver"
 FILES:${PN}-tools-rustfmt = "${bindir}/rustfmt"
+RDEPENDS:${PN}-rustdoc = "${PN}"
 RDEPENDS:${PN}-tools-clippy = "${PN}"
 RDEPENDS:${PN}-tools-rustfmt = "${PN}"