staging: rtl8192e: Join constants AGCTAB_ArrayLength with ..LengthPciE

Join constants AGCTAB_ArrayLength with AGCTAB_ArrayLengthPciE to
RTL8192E_AGCTAB_ARR_LEN to improve readability.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/98a7553403ef95609fbcb84e4cc653628b96c56c.1678814935.git.philipp.g.hortmann@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>