iio: pressure: st_pressure: add SPI-3wire support to st_pressure framework

Add SPI Serial Interface Mode (SIM) register information
to STM pressure framework

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/pressure/st_pressure_core.c

@@ -297,6 +297,10 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
 				.mask = 0x03,
 			},
 		},
+		.sim = {
+			.addr = 0x20,
+			.value = BIT(0),
+		},
 		.multi_read_bit = true,
 		.bootime = 2,
 	},
@@ -343,6 +347,10 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
 			.addr = 0x20,
 			.mask = 0x04,
 		},
+		.sim = {
+			.addr = 0x20,
+			.value = BIT(0),
+		},
 		.multi_read_bit = true,
 		.bootime = 2,
 	},
@@ -406,6 +414,10 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
 				.mask = 0x03,
 			},
 		},
+		.sim = {
+			.addr = 0x20,
+			.value = BIT(0),
+		},
 		.multi_read_bit = true,
 		.bootime = 2,
 	},
@@ -471,6 +483,10 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
 				.mask = 0x03,
 			},
 		},
+		.sim = {
+			.addr = 0x10,
+			.value = BIT(0),
+		},
 		.multi_read_bit = false,
 		.bootime = 2,
 	},