fix(xilinx): fix coding style violations

Fix coding style violations and alignments:
- Remove additional newlines in headers
- Remove additional newlines in code
- Add newline to separate variable from the code
- Use the same indentation in platform.mk
- Align function parameters
- Use tabs for indentation in kernel-doc format

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Change-Id: I0b12804ff63bc19778e8f21041f9accba5b488b9
diff --git a/plat/xilinx/versal/pm_service/pm_client.c b/plat/xilinx/versal/pm_service/pm_client.c
index 77ec20e..4c1d340 100644
--- a/plat/xilinx/versal/pm_service/pm_client.c
+++ b/plat/xilinx/versal/pm_service/pm_client.c
@@ -136,6 +136,7 @@
 			enum pm_device_node_idx node_idx;
 			uint32_t idx, irq, lowest_set = reg & (-reg);
 			enum pm_ret_status ret;
+
 			idx = __builtin_ctz(lowest_set);
 			irq = base_irq + idx;