arm: tegra: common: fix unused variable warning

arm: tegra: common: fix unused variable warning

/home/prakity/dev-kernel_linux/kernel/arch/arm/mach-tegra/common.c:
In function 'tegra_reserve':

/home/prakity/dev-kernel_linux/kernel/arch/arm/mach-tegra/common.c:1786:6:
warning: unused variable 'i' [-Wunused-variable

Change-Id: I91416c4720b639e3333adba242466fb022e7fedc
Signed-off-by: Philip Rakity <prakity@nvidia.com>
Reviewed-on: http://git-master/r/289853
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>