soc/intel/apollolake: Correct the maximum number of Heci devices

Both APL and GLK have 3 Heci devices.

Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I7dc7afb4d2906838a478083b466b36aa78ec49a8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64859
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>

src/soc/intel/apollolake/Kconfig

@@ -134,7 +134,7 @@ config DISABLE_HECI1_AT_PRE_BOOT
 
 config MAX_HECI_DEVICES
 	int
-	default 1
+	default 3
 
 config MAX_CPUS
 	int