[PATCH v2 3/3] arm: socfpga: arria10: Enable cache driver in SPL

[Ley Foon Tan <ley.foon.tan@intel.com>]

Adding "u-boot,dm-pre-reloc" and enable CONFIG_SPL_CACHE
to enable cache driver in SPL.

This fixed error below in SPL:
cache controller driver NOT found!

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

---
v2: Enable SPL_CACHE in Kconfig instead of defconfig.
---
 arch/arm/dts/socfpga_arria10-u-boot.dtsi | 4 ++++
 arch/arm/mach-socfpga/Kconfig            | 1 +
 2 files changed, 5 insertions(+)

diff --git a/arch/arm/dts/socfpga_arria10-u-boot.dtsi b/arch/arm/dts/socfpga_arria10-u-boot.dtsi
index 0db358cf1f2b..6ff1ea6e5eb7 100644
--- a/arch/arm/dts/socfpga_arria10-u-boot.dtsi
+++ b/arch/arm/dts/socfpga_arria10-u-boot.dtsi
@@ -73,6 +73,10 @@
 	reset-names = "i2c";
 };
 
+&L2 {
+	u-boot,dm-pre-reloc;
+};
+
 &l4_mp_clk {
 	u-boot,dm-pre-reloc;
 };
diff --git a/arch/arm/mach-socfpga/Kconfig b/arch/arm/mach-socfpga/Kconfig
index 38d6c1b2ba32..a3699e82a19e 100644
--- a/arch/arm/mach-socfpga/Kconfig
+++ b/arch/arm/mach-socfpga/Kconfig
@@ -46,6 +46,7 @@ config TARGET_SOCFPGA_ARRIA10
 	bool
 	select SPL_ALTERA_SDRAM
 	select SPL_BOARD_INIT if SPL
+	select SPL_CACHE if SPL
 	select CLK
 	select SPL_CLK if SPL
 	select DM_I2C
-- 
2.19.0