BareMetal: Add support for Renesas M32C architecture in GCC toolchain

This commit adds support for the M32C atchitecture:

 * https://www.renesas.com/us/en/products/microcontrollers-microprocessors/m16c.html

using GCC toolchains.

Tested auto-detection on Windows using the GCC v4.7.3 toolchain
provided from the following URL:

 * https://gnutoolchains.com/m32c-elf/

Change-Id: Iaddd69e3109a4bd81d094dcb4edab29c8b398f01
Reviewed-by: hjk <hjk@qt.io>

src/plugins/projectexplorer/abi.cpp

@@ -523,6 +523,12 @@ Abi Abi::abiFromTargetTriplet(const QString &triple)
             flavor = GenericFlavor;
             format = ElfFormat;
             width = 16;
+        } else if (p == "m32c") {
+            arch = M32CArchitecture;
+            os = BareMetalOS;
+            flavor = GenericFlavor;
+            format = ElfFormat;
+            width = 16;
         } else if (p.startsWith("riscv")) {
             arch = RiscVArchitecture;
             os = BareMetalOS;