rk3168_86v: deconfig set ddr freq 300M according to the bootloader setting

arch/arm/configs/rk3168_86v_defconfig

@@ -293,7 +293,7 @@ CONFIG_ARCH_RK30=y
 # CONFIG_DDR_TYPE_DDR3_2133N is not set
 CONFIG_DDR_TYPE_DDR3_DEFAULT=y
 CONFIG_DDR_INIT_CHANGE_FREQ=y
-CONFIG_DDR_SDRAM_FREQ=400
+CONFIG_DDR_SDRAM_FREQ=300
 # CONFIG_DDR_FREQ is not set
 # CONFIG_DDR_TEST is not set
 CONFIG_DVFS=y
@@ -879,35 +879,7 @@ CONFIG_XPS=y
 # CONFIG_HAMRADIO is not set
 # CONFIG_CAN is not set
 # CONFIG_IRDA is not set
-CONFIG_BT=y
-CONFIG_BT_L2CAP=y
-CONFIG_BT_SCO=y
-CONFIG_BT_RFCOMM=y
-CONFIG_BT_RFCOMM_TTY=y
-CONFIG_BT_BNEP=y
-# CONFIG_BT_BNEP_MC_FILTER is not set
-# CONFIG_BT_BNEP_PROTO_FILTER is not set
-CONFIG_BT_HIDP=y
-
-#
-# Bluetooth device drivers
-#
-# CONFIG_BT_HCIBTUSB is not set
-# CONFIG_BT_HCIBTSDIO is not set
-CONFIG_BT_HCIUART=y
-CONFIG_BT_HCIUART_H4=y
-# CONFIG_BT_HCIUART_BCSP is not set
-# CONFIG_BT_HCIUART_ATH3K is not set
-CONFIG_BT_HCIUART_LL=y
-# CONFIG_BT_HCIBCM203X is not set
-# CONFIG_BT_HCIBPA10X is not set
-# CONFIG_BT_HCIBFUSB is not set
-# CONFIG_BT_HCIVHCI is not set
-# CONFIG_BT_MRVL is not set
-CONFIG_BT_HCIBCM4325=y
-CONFIG_IDBLOCK=y
-# CONFIG_WIFI_MAC is not set
-CONFIG_BT_AUTOSLEEP=y
+# CONFIG_BT is not set
 # CONFIG_AF_RXRPC is not set
 CONFIG_FIB_RULES=y
 CONFIG_WIRELESS=y
@@ -2251,7 +2223,6 @@ CONFIG_HID_CYPRESS=y
 CONFIG_HID_DRAGONRISE=y
 CONFIG_DRAGONRISE_FF=y
 CONFIG_HID_EMS_FF=y
-CONFIG_HID_ELECOM=y
 CONFIG_HID_EZKEY=y
 CONFIG_HID_KEYTOUCH=y
 CONFIG_HID_KYE=y
@@ -2266,7 +2237,6 @@ CONFIG_LOGITECH_FF=y
 CONFIG_LOGIRUMBLEPAD2_FF=y
 CONFIG_LOGIG940_FF=y
 CONFIG_LOGIWII_FF=y
-CONFIG_HID_MAGICMOUSE=y
 CONFIG_HID_MICROSOFT=y
 CONFIG_HID_MONTEREY=y
 CONFIG_HID_MULTITOUCH=y
@@ -2297,8 +2267,6 @@ CONFIG_SMARTJOYPLUS_FF=y
 CONFIG_HID_TOPSEED=y
 CONFIG_HID_THRUSTMASTER=y
 CONFIG_THRUSTMASTER_FF=y
-CONFIG_HID_WACOM=y
-# CONFIG_HID_WACOM_POWER_SUPPLY is not set
 CONFIG_HID_ZEROPLUS=y
 CONFIG_ZEROPLUS_FF=y
 CONFIG_HID_ZYDACRON=y