config: cadence_spi: Remove defines read from DT

Cleanup unused #define values that are read from the DT.

Tested on TI K2G platform:
Tested-by: Vignesh R <vigneshr@ti.com>

Tested on a socfpga-cyclonev board:
Tested-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>

Signed-off-by: Jason Rush <jarush@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Acked-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
Acked-by: Marek Vasut <marex@denx.de>

include/configs/k2g_evm.h

@@ -93,7 +93,6 @@
 #ifndef CONFIG_SPL_BUILD
 #define CONFIG_CADENCE_QSPI
 #define CONFIG_CQSPI_REF_CLK 384000000
-#define CONFIG_CQSPI_DECODER 0x0
 #define CONFIG_BOUNCE_BUFFER
 #endif
 

include/configs/socfpga_common.h

@@ -184,7 +184,6 @@ unsigned int cm_get_l4_sp_clk_hz(void);
 unsigned int cm_get_qspi_controller_clk_hz(void);
 #define CONFIG_CQSPI_REF_CLK		cm_get_qspi_controller_clk_hz()
 #endif
-#define CONFIG_CQSPI_DECODER		0
 #define CONFIG_BOUNCE_BUFFER
 
 /*

include/configs/stv0991.h

@@ -63,7 +63,6 @@
 + * QSPI support
 + */
 #ifdef CONFIG_OF_CONTROL		/* QSPI is controlled via DT */
-#define CONFIG_CQSPI_DECODER		0
 #define CONFIG_CQSPI_REF_CLK		((30/4)/2)*1000*1000
 #define CONFIG_BOUNCE_BUFFER