Add missing avr64* series

Author: tomtor

compiler/rustc_target/src/spec/base/avr.rs

@@ -334,6 +334,27 @@ pub fn ef_avr_arch(target_cpu: &str) -> u32 {
         "atmega4808" => elf::EF_AVR_ARCH_XMEGA3,
         "atmega4809" => elf::EF_AVR_ARCH_XMEGA3,
 
+        "avr64da28" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64da32" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64da48" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64da64" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64db28" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64db32" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64db48" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64db64" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64dd14" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64dd20" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64dd28" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64dd32" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64du28" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64du32" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64ea28" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64ea32" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64ea48" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64sd28" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64sd32" => elf::EF_AVR_ARCH_XMEGA2,
+        "avr64sd48" => elf::EF_AVR_ARCH_XMEGA2,
+
         "avr16dd20" => elf::EF_AVR_ARCH_XMEGA3,
         "avr16dd28" => elf::EF_AVR_ARCH_XMEGA3,
         "avr16dd32" => elf::EF_AVR_ARCH_XMEGA3,