arch: arm: mach-k3: Delete tifs node in DT fixup

This patch deletes tifs DT node as part of fixup.

TISCI API reported msmc_size, does not include
64KB reserved size for tifs aka MSMC comms memory.

As part of fixup, original code uses TISCI API
reported msmc_size as size for sram DT node.

tifs node is similar to l3-cache, which should
hold address above msms_size, and should be deleted
before passing control to OS.

Documentation
https://software-dl.ti.com/tisci/esd/latest/2_tisci_msgs/general/core.html?highlight=msmc#tisci-msg-query-msmc



Signed-off-by: Udit Kumar <u-kumar1@ti.com>
Reviewed-by: Neha Malcom Francis <n-francis@ti.com>