Add EM_ALPHA to the list of valid e_machines.

Index: elfutils-0.122/src/elflint.c
===================================================================
--- elfutils-0.122.orig/src/elflint.c	2006-08-09 19:22:58.000000000 +0000
+++ elfutils-0.122/src/elflint.c	2006-08-09 19:23:14.000000000 +0000
@@ -343,7 +343,7 @@
     EM_68HC16, EM_68HC11, EM_68HC08, EM_68HC05, EM_SVX, EM_ST19, EM_VAX,
     EM_CRIS, EM_JAVELIN, EM_FIREPATH, EM_ZSP, EM_MMIX, EM_HUANY, EM_PRISM,
     EM_AVR, EM_FR30, EM_D10V, EM_D30V, EM_V850, EM_M32R, EM_MN10300,
-    EM_MN10200, EM_PJ, EM_OPENRISC, EM_ARC_A5, EM_XTENSA
+    EM_MN10200, EM_PJ, EM_OPENRISC, EM_ARC_A5, EM_XTENSA, EM_ALPHA
   };
 #define nvalid_e_machine \
   (sizeof (valid_e_machine) / sizeof (valid_e_machine[0]))