dt-bindings: clock: qcom: Add support for clocks and BCRs in GCC for Lagoon

Add support for gcc_rx5_pcie_clkref_clk, gcc_gpu_pll0_main_div_clk_src,
gcc_usb3_phy_prim_bcr and gcc_usb3_dp_phy_prim_bcr for Lagoon.

Change-Id: I4a55f475d363cc220dea8e7e51c4e0c8e3bacc4e
Signed-off-by: Diptanshu Jamgade <djamgade@codeaurora.org>