[ELF] Adds non-MIPS specific name for DT_MIPS_RLD_MAP

[jakehehrlich]

Summary

D33251 adds support for DT_MIPS_RLD_MAP on non-MIPS platforms. So a non-MIPS specific .dynamic entry name would be nice. This change simply makes DT_DEBUG_INDIRECT an alias for DT_MIPS_RLD_MAP.

include/llvm/Support/ELF.h

enum {
   DT_MIPS_GP_VALUE = 0x70000030,     // GP value for auxiliary GOTs.
   DT_MIPS_AUX_DYNAMIC = 0x70000031,  // Address of auxiliary .dynamic.
   DT_MIPS_PLTGOT = 0x70000032,       // Address of the base of the PLTGOT.
   DT_MIPS_RWPLT = 0x70000034,        // Points to the base
                                      // of a writable PLT.
   DT_MIPS_RLD_MAP_REL = 0x70000035,  // Relative offset of run time loader
                                      // map, used for debugging.
 
+  DT_DEBUG_INDIRECT = DT_MIPS_RLD_MAP, // Has the same value as DT_MIPS_RLD_MAP
+
   // Sun machine-independent extensions.
   DT_AUXILIARY = 0x7FFFFFFD, // Shared object to load before self
   DT_FILTER = 0x7FFFFFFF     // Shared object to get values from
 };
 
 // DT_FLAGS values.
 enum {
   DF_ORIGIN = 0x01,    // The object may reference $ORIGIN.