trap: don't mislead about SCTLR.V being not set
It's been quite a while since the exception table got moved via the high
vector bit (SCTLR.V).

@@ -14,12 +14,11 @@
 #include <sys/asm_linkage.h>
 #include <sys/cpu_asm.h>
 
 /*
  * Create a section into which to place the exception vector, such that we can
- * force it to be mapped where it needs to be.  Currently at 0x0, since
- * we don't set the high vector bit (SCTLR.V)
+ * force it to be mapped where it needs to be.
  *
  * Each instruction in the vector jumps to its own address + 24, which is the
  * matching entry in exception_table.  We do this to insure that we get
  * effectively infinite displacement, which we can't achieve in one
  * instruction otherwise (and gas complains).