meta-bletchley: kernel: update config for ast2600 pwm tach driver

Remove old Aspeed PWM & TACH configs and update new config to support
latest version of ast2600-pwm-tach (v9) on lore.
Link: https://lore.kernel.org/all/20230918064111.2221594-1-billy_tsai@aspeedtech.com/

Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Change-Id: Ide776a84e59f1982b1af3979b029e3fed91ee8e5
diff --git a/meta-facebook/meta-bletchley/recipes-kernel/linux/linux-aspeed/bletchley.cfg b/meta-facebook/meta-bletchley/recipes-kernel/linux/linux-aspeed/bletchley.cfg
index abcf758..564c1ab 100644
--- a/meta-facebook/meta-bletchley/recipes-kernel/linux/linux-aspeed/bletchley.cfg
+++ b/meta-facebook/meta-bletchley/recipes-kernel/linux/linux-aspeed/bletchley.cfg
@@ -4,11 +4,10 @@
 CONFIG_HAVE_CLK=y
 CONFIG_PWM=y
 CONFIG_OF=y
-CONFIG_PWM_ASPEED_AST2600=y
 # pwm-fan driver
 CONFIG_SENSORS_PWM_FAN=y
-# aspeed-tach driver
-CONFIG_SENSORS_TACH_ASPEED_AST2600=y
+# ast2600-pwm-tach driver
+CONFIG_SENSORS_ASPEED_G6=y
 # aspeed-adc driver
 CONFIG_COMMON_CLK=y
 CONFIG_ASPEED_ADC=y