arch/arm/armv7-m/up_assert : Change the checking of assert_pc is from where
arch/arm/armv7-m/up_assert : Change the checking of assert_pc is from where

There is a common function for checking that address is from kernel or not.
So use that function(is_kernel_space).

Signed-off-by: jc_.kim <dd29dda359f9c9995ad03eb5d0e774929bcceb5c@samsung.com>

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