hw/intc: declare GICv3 regions as little endian

The GIC should always be a little-endian device as big-endian
behaviour is a function of the current CPU configuration not the
system as a whole. This should have no functional effect as the GIC
cannot be instantiated on a BE system but will help the single binary
efforts.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20260121105932.135676-4-alex.bennee@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/intc/arm_gicv3.c

@@ -417,7 +417,7 @@ static const MemoryRegionOps gic_ops[] = {
     {
         .read_with_attrs = gicv3_dist_read,
         .write_with_attrs = gicv3_dist_write,
-        .endianness = DEVICE_NATIVE_ENDIAN,
+        .endianness = DEVICE_LITTLE_ENDIAN,
         .valid.min_access_size = 1,
         .valid.max_access_size = 8,
         .impl.min_access_size = 1,
@@ -426,7 +426,7 @@ static const MemoryRegionOps gic_ops[] = {
     {
         .read_with_attrs = gicv3_redist_read,
         .write_with_attrs = gicv3_redist_write,
-        .endianness = DEVICE_NATIVE_ENDIAN,
+        .endianness = DEVICE_LITTLE_ENDIAN,
         .valid.min_access_size = 1,
         .valid.max_access_size = 8,
         .impl.min_access_size = 1,

hw/intc/arm_gicv3_its.c

@@ -1906,7 +1906,7 @@ static const MemoryRegionOps gicv3_its_control_ops = {
     .valid.max_access_size = 8,
     .impl.min_access_size = 4,
     .impl.max_access_size = 8,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
 static const MemoryRegionOps gicv3_its_translation_ops = {
@@ -1916,7 +1916,7 @@ static const MemoryRegionOps gicv3_its_translation_ops = {
     .valid.max_access_size = 4,
     .impl.min_access_size = 2,
     .impl.max_access_size = 4,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
 static void gicv3_arm_its_realize(DeviceState *dev, Error **errp)

hw/intc/arm_gicv3_its_common.c

@@ -97,7 +97,7 @@ static MemTxResult gicv3_its_trans_write(void *opaque, hwaddr offset,
 static const MemoryRegionOps gicv3_its_trans_ops = {
     .read_with_attrs = gicv3_its_trans_read,
     .write_with_attrs = gicv3_its_trans_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
 void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops,