meta-bletchley: Enable kernel configs for platform-specific devices

1. AST26xx ADC driver
2. AST26xx PWM v14 driver
3. AST26xx Tach driver from Aspeed-linux
4. Enable driver for PHY fixed link
5. HDC1080 humidity sensor driver
6. PCF85363 RTC driver
7. FUSB302 USB-PD PHY driver
8. MP5023 HSC driver
9. DEVMEM driver for early debug purpose

Signed-off-by: Howard Chiu <howard.chiu@quantatw.com>
Change-Id: Ib87de12cabd5aef4ef8bd25ac3451a1df56d3fc1
diff --git a/meta-facebook/meta-bletchley/recipes-kernel/linux/linux-aspeed_%.bbappend b/meta-facebook/meta-bletchley/recipes-kernel/linux/linux-aspeed_%.bbappend
new file mode 100644
index 0000000..4727bdf
--- /dev/null
+++ b/meta-facebook/meta-bletchley/recipes-kernel/linux/linux-aspeed_%.bbappend
@@ -0,0 +1,2 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/linux-aspeed:"
+SRC_URI += "file://bletchley.cfg"