Add loongarch's ELF value.

lib/lib.c

@@ -1491,14 +1491,15 @@ char *elf_arch_name(int type)
     {195, "arcv2"}, {40, "arm"}, {183, "arm64"}, {0x18ad, "avr32"},
     {247, "bpf"}, {106, "blackfin"}, {140, "c6x"}, {23, "cell"}, {76, "cris"},
     {252, "csky"}, {0x5441, "frv"}, {46, "h8300"}, {164, "hexagon"},
-    {50, "ia64"}, {88, "m32r"}, {0x9041, "m32r"}, {4, "m68k"}, {174, "metag"},
-    {189, "microblaze"}, {0xbaab, "microblaze-old"}, {8, "mips"},
-    {10, "mips-old"}, {89, "mn10300"}, {0xbeef, "mn10300-old"}, {113, "nios2"},
-    {92, "openrisc"}, {0x8472, "openrisc-old"}, {15, "parisc"}, {20, "ppc"},
-    {21, "ppc64"}, {243, "riscv"}, {22, "s390"}, {0xa390, "s390-old"},
-    {135, "score"}, {42, "sh"}, {2, "sparc"}, {18, "sparc8+"}, {43, "sparc9"},
-    {188, "tile"}, {191, "tilegx"}, {3, "386"}, {6, "486"}, {62, "x86-64"},
-    {94, "xtensa"}, {0xabc7, "xtensa-old"}
+    {50, "ia64"}, {258, "loongarch"}, {88, "m32r"}, {0x9041, "m32r"},
+    {4, "m68k"}, {174, "metag"}, {189, "microblaze"},
+    {0xbaab, "microblaze-old"}, {8, "mips"}, {10, "mips-old"}, {89, "mn10300"},
+    {0xbeef, "mn10300-old"}, {113, "nios2"}, {92, "openrisc"},
+    {0x8472, "openrisc-old"}, {15, "parisc"}, {20, "ppc"}, {21, "ppc64"},
+    {243, "riscv"}, {22, "s390"}, {0xa390, "s390-old"}, {135, "score"},
+    {42, "sh"}, {2, "sparc"}, {18, "sparc8+"}, {43, "sparc9"}, {188, "tile"},
+    {191, "tilegx"}, {3, "386"}, {6, "486"}, {62, "x86-64"}, {94, "xtensa"},
+    {0xabc7, "xtensa-old"}
   };
 
   for (i = 0; i<ARRAY_LEN(types); i++) {