Increase heap size.

This is needed to make room for the page table of the new test VM.

Bug: 117270899
Change-Id: Ia47d74c82e0ee445a3c78fa06e576f8aaa69fb4e
diff --git a/BUILD.gn b/BUILD.gn
index b0fb56f..0605ddb 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -39,7 +39,7 @@
 
 host_toolchain("host_fake") {
   use_platform = true
-  heap_pages = 40
+  heap_pages = 60
   max_cpus = 4
   max_vms = 6
 }
@@ -49,7 +49,7 @@
   origin_address = "0x88000000"
   use_pl011 = true
   pl011_base_address = "0x1c090000"
-  heap_pages = 40
+  heap_pages = 60
   max_cpus = 8
   max_vms = 16
 }
@@ -59,7 +59,7 @@
   origin_address = "0x40001000"
   use_pl011 = true
   pl011_base_address = "0x09000000"
-  heap_pages = 40
+  heap_pages = 60
   max_cpus = 8
   max_vms = 16
 }
@@ -69,7 +69,7 @@
   origin_address = "0x35000000"
   use_pl011 = true
   pl011_base_address = "0xf7113000"  # UART3
-  heap_pages = 40
+  heap_pages = 60
   max_cpus = 8
   max_vms = 16
 }