[U-Boot] [PATCH v2] Delete unused definitions for SDR0_DDRCFG from ppc4xx.h

[Steven A. Falco <sfalco@harris.com>]

The definitions of bits in SDR_CFG are incorrect, and not used within
U-Boot.  Therefore, they can be removed.

The naming of the sdr_ddrdl/sdr_cfg registers do not follow conventions,
and are unused, so they can be removed too.

A definition for SDR0_DDRCFG is added.

Signed-off-by: Steven A. Falco <sfalco@harris.com>
---

As per Stefan's request, here is a patch removing the unused, incorrect
definitions.

Note that the AMCC DDR spreadsheet does calculate a value for the
sdr_cfg register, and I want to use that in a new board design (not yet
ready for submission), so I've added the SDR0_DDRCFG definition.

diff --git a/include/ppc440.h b/include/ppc440.h
index c581f1b..2d64ed6 100644
--- a/include/ppc440.h
+++ b/include/ppc440.h
@@ -170,18 +170,9 @@
 #define sdr_ecid1	0x0081
 #define sdr_ecid2	0x0082
 #define sdr_jtag	0x00c0
-#if !defined(CONFIG_440EPX) && !defined(CONFIG_440GRX)
-#define sdr_ddrdl	0x00e0
-#else
-#define sdr_cfg		0x00e0
-#define SDR_CFG_LT2_MASK          0x01000000 /* Leakage test 2*/
-#define SDR_CFG_64_32BITS_MASK    0x01000000 /* Switch DDR 64 bits or 32 bits */
-#define SDR_CFG_32BITS            0x00000000  /* 32 bits */
-#define SDR_CFG_64BITS            0x01000000  /* 64 bits */
-#define SDR_CFG_MC_V2518_MASK     0x02000000 /* Low VDD2518 (2.5 or 1.8V) */
-#define SDR_CFG_MC_V25            0x00000000  /* 2.5 V */
-#define SDR_CFG_MC_V18            0x02000000  /* 1.8 V */
-#endif /* !defined(CONFIG_440EPX) && !defined(CONFIG_440GRX) */
+#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+#define SDR0_DDRCFG	0x00e0
+#endif /* defined(CONFIG_440EPX) || defined(CONFIG_440GRX) */
 #define sdr_ebc		0x0100
 #define sdr_uart0	0x0120	/* UART0 Config */
 #define sdr_uart1	0x0121	/* UART1 Config */