ARM: shmobile: r8a7779: Remove DU1_DOTCLKOUT1 GPIO

The function is not documented in the r8a7779 datasheet. Remove it.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

arch/arm/mach-shmobile/include/mach/r8a7779.h

@@ -308,7 +308,7 @@ enum {
 	GPIO_FN_SD2_CD, GPIO_FN_MT0_VCXO, GPIO_FN_SPA_TMS, GPIO_FN_HSPI_TX1_D,
 	GPIO_FN_VI1_DATA7_VI1_B7, GPIO_FN_SD2_WP, GPIO_FN_MT0_PWM,
 	GPIO_FN_SPA_TDI, GPIO_FN_HSPI_RX1_D, GPIO_FN_VI1_G0, GPIO_FN_VI3_DATA0,
-	GPIO_FN_DU1_DOTCLKOUT1, GPIO_FN_TS_SCK1, GPIO_FN_DREQ2_B, GPIO_FN_TX2,
+	GPIO_FN_TS_SCK1, GPIO_FN_DREQ2_B, GPIO_FN_TX2,
 	GPIO_FN_SPA_TDO, GPIO_FN_HCTS0_B, GPIO_FN_VI1_G1, GPIO_FN_VI3_DATA1,
 	GPIO_FN_SSI_SCK1, GPIO_FN_TS_SDEN1, GPIO_FN_DACK2_B, GPIO_FN_RX2,
 	GPIO_FN_HRTS0_B,