staging: rtl8192e: Join constants MACPHY_Array_PGLength with ..LengthPciE

Join constants MACPHY_Array_PGLength with MACPHY_Array_PGLengthPciE to
RTL8192E_MACPHY_ARR_PG_LEN to improve readability.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/6d86257ddf3fecbf2bb104f1eeedbf09a56e0861.1678814935.git.philipp.g.hortmann@gmail.com


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