board: ti: j784s4: Add board support for J784S4 EVM

Add board files for J784S4 EVM.

SYS_DISABLE_DCACHE_OPS is selected in the Kconfig because
J784S4/AM69 are a coherent architecture at A72 level by
MSMC support.

Signed-off-by: Hari Nagalla <hnagalla@ti.com>
Signed-off-by: Dasnavis Sabiya <sabiya.d@ti.com>
Signed-off-by: Apurva Nandan <a-nandan@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> # AM69-SK
diff --git a/board/ti/j784s4/Kconfig b/board/ti/j784s4/Kconfig
new file mode 100644
index 0000000..490c7be
--- /dev/null
+++ b/board/ti/j784s4/Kconfig
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Copyright (C) 2023-2024 Texas Instruments Incorporated - https://www.ti.com/
+#	Hari Nagalla <hnagalla@ti.com>
+
+if TARGET_J784S4_A72_EVM
+
+config SYS_BOARD
+       default "j784s4"
+
+config SYS_VENDOR
+       default "ti"
+
+config SYS_CONFIG_NAME
+       default "j784s4_evm"
+
+source "board/ti/common/Kconfig"
+
+endif
+
+if TARGET_J784S4_R5_EVM
+
+config SYS_BOARD
+       default "j784s4"
+
+config SYS_VENDOR
+       default "ti"
+
+config SYS_CONFIG_NAME
+       default "j784s4_evm"
+
+config SPL_LDSCRIPT
+	default "arch/arm/mach-omap2/u-boot-spl.lds"
+
+source "board/ti/common/Kconfig"
+
+endif