mx23: ssp: Fix ssp-regs.h for MX23

Disable SSP2 and SSP3 ports on MX23.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/arch/arm/include/asm/arch-mxs/regs-ssp.h b/arch/arm/include/asm/arch-mxs/regs-ssp.h
index 4a75029..b97ac35 100644
--- a/arch/arm/include/asm/arch-mxs/regs-ssp.h
+++ b/arch/arm/include/asm/arch-mxs/regs-ssp.h
@@ -58,10 +58,12 @@
 		return (struct mxs_ssp_regs *)MXS_SSP0_BASE;
 	case 1:
 		return (struct mxs_ssp_regs *)MXS_SSP1_BASE;
+#ifdef CONFIG_MX28
 	case 2:
 		return (struct mxs_ssp_regs *)MXS_SSP2_BASE;
 	case 3:
 		return (struct mxs_ssp_regs *)MXS_SSP3_BASE;
+#endif
 	default:
 		return NULL;
 	}