configs: phycore_am64x_a53_defconfig: Fix GPIO controllers

The phyBOARD-Electra does not include a PCA953x I2C GPIO multiplexer.
Remove this configuration as it is a remnant from another
defconfig, and enable CONFIG_DA8XX_GPIO for the DA8XX DaVinci GPIO
controller instead.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Reviewed-by: Wadim Egorov <w.egorov@phytec.de>
diff --git a/configs/phycore_am64x_a53_defconfig b/configs/phycore_am64x_a53_defconfig
index bc45000..4b9dcce 100644
--- a/configs/phycore_am64x_a53_defconfig
+++ b/configs/phycore_am64x_a53_defconfig
@@ -112,11 +112,9 @@
 CONFIG_DMA_CHANNELS=y
 CONFIG_TI_K3_NAVSS_UDMA=y
 CONFIG_TI_SCI_PROTOCOL=y
-CONFIG_DM_PCA953X=y
-CONFIG_SPL_DM_PCA953X=y
+CONFIG_DA8XX_GPIO=y
 CONFIG_DM_I2C=y
 CONFIG_I2C_SET_DEFAULT_BUS_NUM=y
-CONFIG_DM_I2C_GPIO=y
 CONFIG_SYS_I2C_OMAP24XX=y
 CONFIG_DM_MAILBOX=y
 CONFIG_K3_SEC_PROXY=y