arm/dt: zinc: Add kmalloc heap
arm/dt: zinc: Add kmalloc heap

The kmalloc heap is needed for testing purposes. Add the definition
of the heap in the devicetree.

Change-Id: Ib1372888ee8d7f12589a03c6f962853aa823ad68
Signed-off-by: Laura Abbott <e7b4910f4742918f5926c991d8a2cd122ac7e295@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas