configs: add qcs9100_defconfig

Introduce a defconfig for the Ride R3 and other QCS9100 boards with a
dedicated uefi partition. These can replace EDK2 entirely with U-Boot.

Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lore.kernel.org/r/20250110050817.3819282-7-quic_varada@quicinc.com
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
diff --git a/configs/qcs9100_defconfig b/configs/qcs9100_defconfig
new file mode 100644
index 0000000..10ff4d2
--- /dev/null
+++ b/configs/qcs9100_defconfig
@@ -0,0 +1,18 @@
+# Configuration for building U-Boot to be flashed
+# to the uefi partition of QCS9100 based dev boards with
+# the "Linux Embedded" partition layout (which have
+# a dedicated "uefi" partition for edk2/U-Boot)
+
+#include "qcom_defconfig"
+
+CONFIG_DEBUG_UART=y
+CONFIG_DEBUG_UART_ANNOUNCE=y
+CONFIG_DEBUG_UART_BASE=0xA8C000
+CONFIG_DEBUG_UART_MSM_GENI=y
+CONFIG_DEBUG_UART_CLOCK=14745600
+
+# Address where U-Boot will be loaded
+CONFIG_TEXT_BASE=0xaf000000
+CONFIG_REMAKE_ELF=y
+
+CONFIG_DEFAULT_DEVICE_TREE="qcom/qcs9100-ride-r3"