pinctrl: renesas: r8a7794: Share QSPI pin group data

Pin group qspi_data2 is a subset of qspi_data4.

This reduces kernel size by 16 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/114bde1f6e7405f9b299c67f1219adde16ea0212.1640269757.git.geert+renesas@glider.be

drivers/pinctrl/renesas/pfc-r8a7794.c

@@ -2730,19 +2730,12 @@ static const unsigned int qspi_ctrl_pins[] = {
 static const unsigned int qspi_ctrl_mux[] = {
 	SPCLK_MARK, SSL_MARK,
 };
-static const unsigned int qspi_data2_pins[] = {
-	/* MOSI_IO0, MISO_IO1 */
-	RCAR_GP_PIN(1, 5), RCAR_GP_PIN(1, 6),
-};
-static const unsigned int qspi_data2_mux[] = {
-	MOSI_IO0_MARK, MISO_IO1_MARK,
-};
-static const unsigned int qspi_data4_pins[] = {
+static const unsigned int qspi_data_pins[] = {
 	/* MOSI_IO0, MISO_IO1, IO2, IO3 */
 	RCAR_GP_PIN(1, 5), RCAR_GP_PIN(1, 6), RCAR_GP_PIN(1, 7),
 	RCAR_GP_PIN(1, 8),
 };
-static const unsigned int qspi_data4_mux[] = {
+static const unsigned int qspi_data_mux[] = {
 	MOSI_IO0_MARK, MISO_IO1_MARK, IO2_MARK, IO3_MARK,
 };
 /* - SCIF0 ------------------------------------------------------------------ */
@@ -3952,8 +3945,8 @@ static const struct sh_pfc_pin_group pinmux_groups[] = {
 	SH_PFC_PIN_GROUP(pwm6),
 	SH_PFC_PIN_GROUP(pwm6_b),
 	SH_PFC_PIN_GROUP(qspi_ctrl),
-	SH_PFC_PIN_GROUP(qspi_data2),
-	SH_PFC_PIN_GROUP(qspi_data4),
+	BUS_DATA_PIN_GROUP(qspi_data, 2),
+	BUS_DATA_PIN_GROUP(qspi_data, 4),
 	SH_PFC_PIN_GROUP(scif0_data),
 	SH_PFC_PIN_GROUP(scif0_data_b),
 	SH_PFC_PIN_GROUP(scif0_data_c),