drivers: sensor: lis2de12: fix read accel via spi

The lis2de12 sensor driver spi interface was calling spi read api.
This leads to a single byte operation on reading acceleration data
which is a multi byte operation. Fix it by adding a call to spi read
incr api instead. Added a length check to handle both single and multi
byte read properly.

Signed-off-by: Mayank Narang <[email protected]>
(cherry picked from commit 7b062f5)

Author: narangmayank

drivers/sensor/st/lis2de12/lis2de12.c

@@ -435,7 +435,7 @@ static int lis2de12_init(const struct device *dev)
 
 #define LIS2DE12_CONFIG_SPI(inst)						\
 	{									\
-		STMEMSC_CTX_SPI(&lis2de12_config_##inst.stmemsc_cfg),		\
+		STMEMSC_CTX_SPI_INCR(&lis2de12_config_##inst.stmemsc_cfg),		\
 		.stmemsc_cfg = {						\
 			.spi = SPI_DT_SPEC_INST_GET(inst, LIS2DE12_SPI_OP, 0),	\
 		},								\

drivers/sensor/st/stmemsc/stmemsc_spi.c

@@ -63,7 +63,10 @@ int stmemsc_spi_write(const struct spi_dt_spec *stmemsc,
 int stmemsc_spi_read_incr(const struct spi_dt_spec *stmemsc,
 			  uint8_t reg_addr, uint8_t *value, uint8_t len)
 {
-	reg_addr |= STMEMSC_SPI_ADDR_AUTO_INCR;
+	if (len > 1) {
+		reg_addr |= STMEMSC_SPI_ADDR_AUTO_INCR;
+	}
+
 	return stmemsc_spi_read(stmemsc, reg_addr, value, len);
 }