Rollup merge of rust-lang#138147 - daltenty:patch-1, r=jieyouxu

Add maintainers for powerpc64le-unknown-linux-gnu

The instructions are similar to `powerpc64le-unknown-linux-musl`

Author: jieyouxu

src/doc/rustc/src/SUMMARY.md

@@ -72,6 +72,7 @@
     - [powerpc-unknown-linux-gnuspe](platform-support/powerpc-unknown-linux-gnuspe.md)
     - [powerpc-unknown-linux-muslspe](platform-support/powerpc-unknown-linux-muslspe.md)
     - [powerpc64-ibm-aix](platform-support/aix.md)
+    - [powerpc64le-unknown-linux-gnu](platform-support/powerpc64le-unknown-linux-gnu.md)
     - [powerpc64le-unknown-linux-musl](platform-support/powerpc64le-unknown-linux-musl.md)
     - [riscv32e\*-unknown-none-elf](platform-support/riscv32e-unknown-none-elf.md)
     - [riscv32i\*-unknown-none-elf](platform-support/riscv32-unknown-none-elf.md)

src/doc/rustc/src/platform-support.md

@@ -96,7 +96,7 @@ target | notes
 [`loongarch64-unknown-linux-musl`](platform-support/loongarch-linux.md) | LoongArch64 Linux, LP64D ABI (kernel 5.19, musl 1.2.5)
 `powerpc-unknown-linux-gnu` | PowerPC Linux (kernel 3.2, glibc 2.17)
 `powerpc64-unknown-linux-gnu` | PPC64 Linux (kernel 3.2, glibc 2.17)
-`powerpc64le-unknown-linux-gnu` | PPC64LE Linux (kernel 3.10, glibc 2.17)
+[`powerpc64le-unknown-linux-gnu`](platform-support/powerpc64le-unknown-linux-gnu.md) | PPC64LE Linux (kernel 3.10, glibc 2.17)
 [`powerpc64le-unknown-linux-musl`](platform-support/powerpc64le-unknown-linux-musl.md) | PPC64LE Linux (kernel 4.19, musl 1.2.3)
 [`riscv64gc-unknown-linux-gnu`](platform-support/riscv64gc-unknown-linux-gnu.md) | RISC-V Linux (kernel 4.20, glibc 2.29)
 [`riscv64gc-unknown-linux-musl`](platform-support/riscv64gc-unknown-linux-musl.md) | RISC-V Linux (kernel 4.20, musl 1.2.3)

src/doc/rustc/src/platform-support/powerpc64le-unknown-linux-gnu.md

@@ -0,0 +1,47 @@
+# `powerpc64le-unknown-linux-gnu`
+
+**Tier: 2**
+
+Target for 64-bit little endian PowerPC Linux programs
+
+## Target maintainers
+
+- David Tenty `daltenty@ibm.com`, https://github.com/daltenty
+- Chris Cambly, `ccambly@ca.ibm.com`, https://github.com/gilamn5tr
+
+## Requirements
+
+Building the target itself requires a 64-bit little endian PowerPC compiler that is supported by `cc-rs`.
+
+## Building the target
+
+The target can be built by enabling it for a `rustc` build.
+
+```toml
+[build]
+target = ["powerpc64le-unknown-linux-gnu"]
+```
+
+Make sure your C compiler is included in `$PATH`, then add it to the `config.toml`:
+
+```toml
+[target.powerpc64le-unknown-linux-gnu]
+cc = "powerpc64le-linux-gnu-gcc"
+cxx = "powerpc64le-linux-gnu-g++"
+ar = "powerpc64le-linux-gnu-ar"
+linker = "powerpc64le-linux-gnu-gcc"
+```
+
+## Building Rust programs
+
+This target is distributed through `rustup`, and requires no special
+configuration.
+
+## Cross-compilation
+
+This target can be cross-compiled from any host.
+
+## Testing
+
+This target can be tested as normal with `x.py` on a 64-bit little endian
+PowerPC host or via QEMU emulation.