configs: socfpga: soc64: agilex5: Use common ARMv8 linker script

Use default common ARMv8 linker script instead of a separate
SoC64 linker script

Signed-off-by: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@altera.com>
diff --git a/configs/socfpga_agilex5_defconfig b/configs/socfpga_agilex5_defconfig
index 61ce065..97b00a8 100644
--- a/configs/socfpga_agilex5_defconfig
+++ b/configs/socfpga_agilex5_defconfig
@@ -2,7 +2,6 @@
 CONFIG_ARCH_SOCFPGA=y
 CONFIG_TEXT_BASE=0x80200000
 CONFIG_NR_DRAM_BANKS=3
-CONFIG_SPL_LDSCRIPT="arch/arm/mach-socfpga/u-boot-spl-soc64.lds"
 CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
 CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x80300000
 CONFIG_SF_DEFAULT_MODE=0x2003