Add PPC4xx-HCU4 and HCU5 boards: Infrastructure

This series of patches adds support for 2 boards from Netstal Maschinen.

The HCU4 has a PPC405Gpr and
the HCU5 has a PPC440EPX.

The HCU4 has a somehow complicated flash setup, as the booteprom is
only 8 bits and the CFI 16 bits wide, which makes it impossible to use a more
elegant solution.

The HCU5 has only a booteprom as the whole code will be downloaded from a
different board which has HD, CD-ROM, etc and where all code is stored.

This is my third try. I incorporated all suggestions made by Wolfgang and Stefan.
Thanks them a lot.

Signed-off-by: Niklaus Giger <niklaus.giger@netstal.com>
diff --git a/CREDITS b/CREDITS
index 7af1b80..1af9c7f 100644
--- a/CREDITS
+++ b/CREDITS
@@ -160,6 +160,11 @@
 E: ThomasF@hyperion-entertainment.com
 D: Support for AmigaOne
 
+N: Niklaus Giger
+E: niklaus.giger@netstal.com
+D: Support for HCU(x) boards
+W: www.netstal.com
+
 N: Paul Gortmaker
 E: paul.gortmaker@windriver.com
 D: Support for WRS SBC8347/8349 boards
diff --git a/MAINTAINERS b/MAINTAINERS
index 693b115..8dc46ad 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -160,6 +160,11 @@
 	WUH405			PPC405EP
 	CMS700                  PPC405EP
 
+Niklaus Giger <niklaus.giger@netstal.com>
+
+        HCU4                    PPC405GPr
+        HCU5                    PPC440EPx
+
 Frank Gottschling <fgottschling@eltec.de>
 
 	MHPC			MPC8xx
diff --git a/MAKEALL b/MAKEALL
index 127faa8..e706797 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -82,16 +82,16 @@
 	CPCI405DT	CPCI440		CPCIISER4	CRAYL1		\
 	csb272		csb472		DASA_SIM	DP405		\
 	DU405		ebony		ERIC		EXBITGEN	\
-	G2000		HH405		HUB405		JSE		\
-	KAREF		katmai		luan		lwmon5		\
-	METROBOX	MIP405		MIP405T		ML2		\
-	ml300		ocotea		OCRTC		ORSG		\
-	p3p440		PCI405		pcs440ep	PIP405		\
-	PLU405		PMC405		PPChameleonEVB	sbc405		\
-	sc3		sequoia		sequoia_nand	taishan		\
-	VOH405		VOM405		W7OLMC		W7OLMG		\
-	walnut		WUH405		XPEDITE1K	yellowstone	\
-	yosemite	yucca						\
+	G2000		HH405		hcu4            hcu5            \
+	HUB405          JSE             KAREF		katmai		\
+	luan            lwmon5          METROBOX	MIP405		\
+	MIP405T         ML2             ml300		ocotea		\
+	OCRTC           ORSG            p3p440		PCI405		\
+	pcs440ep        PIP405          PLU405		PMC405		\
+	PPChameleonEVB  sbc405          sc3		sequoia		\
+	sequoia_nand    taishan         VOH405		VOM405		\
+	W7OLMC          W7OLMG          walnut		WUH405		\
+	XPEDITE1K       yellowstone     yosemite	yucca						\
 "
 
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