Remove redundant dependency calls

- In the current state, the build system has too many
  dependency calls, because of which meson tries to find
  the same dependendency mutiple times & prints a trace
  on the console.This would have been an ideal solution
  when all the subdirectories are subprojects in meson but
  in the current context it is not.

- Even though meson uses the cached dependency objects
  rather than fetching them every time, it might not
  give any added advantage on the performance front.

- But checking for the same dependency mutiple times gives
  a false impression to the users & this can be avoided by
  re-using the dependency objects across subdirectories.

Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
Change-Id: Ic428b2ab1897e4dc4a0024164c07fd416c927da1