- remove NO_MODULES since they've been working for some time

- add -fno-omit-framepointer to CFLAGS if DDB is enabled so
  backtraces will still work when optimization is enabled.
  Stolen from Makefile.amd64.

sys/conf/Makefile.powerpc

@@ -19,9 +19,6 @@
 # Which version of config(8) is required.
 %VERSREQ=	600000
 
-# Temporary stuff while we're still embryonic
-NO_MODULES=
-
 STD8X16FONT?=	iso
 
 .if !defined(S)
@@ -35,6 +32,11 @@ S=	../../..
 
 CFLAGS+= -msoft-float
 
+DDB_ENABLED!=	grep DDB opt_ddb.h || true
+.if ${DDB_ENABLED} != ""
+CFLAGS+=	-fno-omit-frame-pointer
+.endif
+
 %BEFORE_DEPEND
 
 %OBJS