pumpkin: Increase heap and environment variable size

Android libavb use malloc to allocate memory to load the boot.img.
But currently, the memory that could be allocated using malloc
is too small.

In addition, libavb use environment variable that must be used for
the kernel command line. Again, the current size for the environment
variable is too small.

Increase the size of the heap, and the size of environment variable
in order to use and support AVB2.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
1 file changed