arm: mach-k3: fixup whitespace in SPDX License IDs

The SPDX ID format usese a single space used after the
'SPDX-License-Identifier:'. Fix all files that use any other white-space
character other than a single space.

Signed-off-by: Bryan Brattlof <bb@ti.com>
diff --git a/arch/arm/mach-k3/r5/j721e/Makefile b/arch/arm/mach-k3/r5/j721e/Makefile
index 0f91cf4..78325db 100644
--- a/arch/arm/mach-k3/r5/j721e/Makefile
+++ b/arch/arm/mach-k3/r5/j721e/Makefile
@@ -1,4 +1,4 @@
-# SPDX-License-Identifier:	GPL-2.0+
+# SPDX-License-Identifier: GPL-2.0+
 #
 # Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com/
 obj-y += clk-data.o