simple_lmk: Update Kconfig description for VM pressure change

Simple LMK uses VM pressure now, not a kswapd hook like before. Update
the Kconfig description to reflect such.

Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
Signed-off-by: khusika <mail@khusika.com>

drivers/android/Kconfig

@@ -62,8 +62,8 @@ config ANDROID_SIMPLE_LMK
 	  small and simple. Processes are killed according to the priorities
 	  that Android gives them, so that the least important processes are
 	  always killed first. Processes are killed until memory deficits are
-	  satisfied, as observed from kswapd struggling to free up pages. Simple
-	  LMK stops killing processes when kswapd finally goes back to sleep.
+	  satisfied, as observed from direct reclaim and kswapd reclaim
+	  struggling to free up pages, via VM pressure notifications.
 
 if ANDROID_SIMPLE_LMK