ARM: DRA7x/AM57xx: Get rid of CONFIG_AM57XX

CONFIG_AM57XX is just an unnecessary macro that is redundant given So,
remove the same instead of spreading through out the u-boot source
code and getting in the way to maintain common code for DRA7x family.

Acked-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/spi/ti_qspi.c b/drivers/spi/ti_qspi.c
index da04886..6f9f983 100644
--- a/drivers/spi/ti_qspi.c
+++ b/drivers/spi/ti_qspi.c
@@ -383,7 +383,7 @@
 
 	priv->base = (struct ti_qspi_regs *)QSPI_BASE;
 	priv->mode = mode;
-#if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)
+#if defined(CONFIG_DRA7XX)
 	priv->ctrl_mod_mmap = (void *)CORE_CTRL_IO;
 	priv->slave.memory_map = (void *)MMAP_START_ADDR_DRA;
 	priv->fclk = QSPI_DRA7XX_FCLK;