sandbox: allow building sandbox_spl with CONFIG_DEBUG

Building sandbox_spl with CONFIG_DEBUG leads to errors due to missing
symbols:

    /usr/bin/ld: common/spl/spl_fit.o: in function `spl_fit_upload_fpga':
    common/spl/spl_fit.c:595: undefined reference to `fpga_load'
    /usr/bin/ld: test/test-main.o: in function `dm_test_post_run':
    test/test-main.c:124: undefined reference to `crc8'
    /usr/bin/ld: test/test-main.o: in function `dm_test_pre_run':
    test/test-main.c:95: undefined reference to `crc8'
    collect2: error: ld returned 1 exit status

This is due to -Og not eliminating unused functions.

Add FPGA and CRC8 support to the defconfig. Sandbox tests for
SPL_FPGA and CRC8 should be created. So enabling these setting
is advised anyway.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/sandbox_spl_defconfig b/configs/sandbox_spl_defconfig
index 4e0021a..851c3b6 100644
--- a/configs/sandbox_spl_defconfig
+++ b/configs/sandbox_spl_defconfig
@@ -33,6 +33,7 @@
 CONFIG_HANDOFF=y
 CONFIG_SPL_BOARD_INIT=y
 CONFIG_SPL_ENV_SUPPORT=y
+CONFIG_SPL_FPGA=y
 CONFIG_SPL_I2C=y
 CONFIG_SPL_RTC=y
 CONFIG_CMD_CPU=y
@@ -126,6 +127,8 @@
 CONFIG_DM_DEMO_SIMPLE=y
 CONFIG_DM_DEMO_SHAPE=y
 CONFIG_SPL_FIRMWARE=y
+CONFIG_DM_FPGA=y
+CONFIG_SANDBOX_FPGA=y
 CONFIG_GPIO_HOG=y
 CONFIG_QCOM_PMIC_GPIO=y
 CONFIG_SANDBOX_GPIO=y
@@ -237,6 +240,7 @@
 CONFIG_CMD_DHRYSTONE=y
 CONFIG_RSA_VERIFY_WITH_PKEY=y
 CONFIG_TPM=y
+CONFIG_SPL_CRC8=y
 CONFIG_LZ4=y
 CONFIG_ZSTD=y
 CONFIG_ERRNO_STR=y