fix prev compiler error

cc/cc.c

@@ -4214,8 +4214,8 @@ int cc(int mode, int argc, char** argv) {
     if (mode == 0) {
         // check that table is ordered
         for (int i = 1; i < NUMOF(externs); i++)
-            if (strcmp(externs[i - 1].name, externs[i].name) >= 0)
-                run_fatal("out of order starting at %s\n", externs[i].name);
+            if (strcmp(externs[i].name, externs[i - 1].name) <= 0)
+                run_fatal("out of order starting at %s\n %s", externs[i - 1].name, externs[i].name);
         // Register keywords in symbol table. Must match the sequence of enum
         p = "enum char int float struct union sizeof return goto break continue "
             "if do while for switch case default else void main";

cc/cc_extrns.h

@@ -96,12 +96,13 @@
     {"i2c_get_dreq", 2, i2c_defines, i2c_get_dreq, 0},
     {"i2c_get_hw", 1, i2c_defines, i2c_get_hw, 0},
 #if PICO_SDK_VERSION_MAJOR >= 2
-    {"i3c_get_index", 1, i2c_defines, i2c_get_index, 0},
-#else
-    {"i2c_hw_index", 1, i2c_defines, i2c_hw_index, 0},
+    {"i2c_get_index", 1, i2c_defines, i2c_get_index, 0},
 #endif
     {"i2c_get_read_available", 1, i2c_defines, i2c_get_read_available, 0},
     {"i2c_get_write_available", 1, i2c_defines, i2c_get_write_available, 0},
+#if PICO_SDK_VERSION_MAJOR < 2
+    {"i2c_hw_index", 1, i2c_defines, i2c_hw_index, 0},
+#endif
     {"i2c_init", 2, i2c_defines, i2c_init, 0},
     {"i2c_read_blocking", 5, i2c_defines, i2c_read_blocking, 0},
     {"i2c_read_raw_blocking", 3, i2c_defines, i2c_read_raw_blocking, 0},