Depricate the config syntax `option foo'' and assume people meant `option foo=1''

src/cpu/i786/Config

@@ -1,3 +1,3 @@
-option i786
+option i786=1
 
 object delay_i786.o

src/cpu/p5/Config

@@ -1,3 +1,3 @@
-option i586
+option i586=1
 object cpuid.o
 #object tsc.o

src/cpu/p6/Config

@@ -1,5 +1,5 @@
-option i686
-option INTEL_PPRO_MTRR
+option i686=1
+option INTEL_PPRO_MTRR=1
 object microcode.o
 object mtrr.o
 object l2_cache.o