doc: remove AMCC PPC405 processor references

Support for PPC4XX processors has been removed. So we should not mention it
in the documentation.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
diff --git a/doc/README.bedbug b/doc/README.bedbug
index 35e9d27..1a2acd0 100644
--- a/doc/README.bedbug
+++ b/doc/README.bedbug
@@ -2,8 +2,6 @@
 --------------------------
 
 These changes implement the bedbug (emBEDded deBUGger) debugger in U-Boot.
-A specific implementation is made for the AMCC 405 processor but other flavors
-can be easily implemented.
 
 #####################
 ### Modifications ###
@@ -12,25 +10,9 @@
 ./common/Makefile
 	Included cmd_bedbug.c and bedbug.c in the Makefile.
 
-./common/command.c
-	Added bedbug commands to command table.
-
 ./common/board.c
 	Added call to initialize debugger on startup.
 
-./arch/powerpc/cpu/ppc4xx/Makefile
-	Added bedbug_405.c to the Makefile.
-
-./arch/powerpc/cpu/ppc4xx/start.S
-	Added code to handle the debug exception (0x2000) on the 405.
-	Also added code to handle critical exceptions since the debug
-	is treated as critical on the 405.
-
-./arch/powerpc/cpu/ppc4xx/traps.c
-	Added more detailed output for the program exception to tell
-	if it is an illegal instruction, privileged instruction or
-	a trap. Also added debug trap handler.
-
 ./include/ppc_asm.tmpl
 	Added code to handle critical exceptions
 
@@ -51,10 +33,6 @@
 	hardware breakpoints and stepping through code.  These
 	routines are common to all PowerPC processors.
 
-./arch/powerpc/cpu/ppc4xx/bedbug_405.c
-	AMCC  PPC405 specific debugger routines.
-
-
 Bedbug support for the MPC860
 -----------------------------