board: renesas: ebisu: Drop CA57 check in reset_cpu()

Renesas Ebisu board is based on R-Car E3 SoC which has dual CA53 and
a CR7.

This patch drops check for cputype from reset_cpu() and also drops the
corresponding CA57 macros. While at it also dropped RST_RSTOUTCR macro
which is unused.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>

board/renesas/ebisu/ebisu.c

@@ -47,23 +47,10 @@ int board_init(void)
 }
 
 #define RST_BASE	0xE6160000
-#define RST_CA57RESCNT	(RST_BASE + 0x40)
 #define RST_CA53RESCNT	(RST_BASE + 0x44)
-#define RST_RSTOUTCR	(RST_BASE + 0x58)
-#define RST_CA57_CODE	0xA5A5000F
 #define RST_CA53_CODE	0x5A5A000F
 
 void reset_cpu(ulong addr)
 {
-	unsigned long midr, cputype;
-
-	asm volatile("mrs %0, midr_el1" : "=r" (midr));
-	cputype = (midr >> 4) & 0xfff;
-
-	if (cputype == 0xd03)
-		writel(RST_CA53_CODE, RST_CA53RESCNT);
-	else if (cputype == 0xd07)
-		writel(RST_CA57_CODE, RST_CA57RESCNT);
-	else
-		hang();
+	writel(RST_CA53_CODE, RST_CA53RESCNT);
 }