riscv: openeuler_defconfig: Enable more ACPI_APEI configs

[GooTal]

Enable the following ACPI APEI configuration options in arch/riscv/configs/openeuler_defconfig to enhance RAS capabilities:
CONFIG_ACPI_APEI_EINJ=y
CONFIG_ACPI_APEI_ERST_DEBUG=y
CONFIG_ACPI_APEI_PCIEAER=y
CONFIG_MEMORY_FAILURE=y
CONFIG_ACPI_APEI_MEMORY_FAILURE=y
Purpose:
EINJ / ERST_DEBUG: Error injection and debugging support for RAS testing
PCIEAER: PCIe AER error reporting via APEI firmware-first mode
MEMORY_FAILURE / APEI_MEMORY_FAILURE: Memory error detection and recovery
These options are already enabled on x86 and arm64 architectures.