Staging: rts5208: Add SPDX license tags

Add SPDX license tags to remove checkpatch SPDX warnings.

Signed-off-by: Kim Bradley <kim.jamie.bradley@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rts5208: Alignment fixes

Cleaning up checkpatch issues

Signed-off-by: Wayne Porter <wporter82@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: rts5208: fix double blank line coding style issues

This is a patch for double blank lines and a missing blank line reported
by checkpatch.pl

Signed-off-by: Jonas Rickert <jrickertkc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging, rts5208, LLVMLinux: Change extern inline to static inline

With compilers which follow the C99 standard (like modern versions of gcc and
clang), "extern inline" does the opposite thing from older versions of gcc
(emits code for an externally linkable version of the inline function). "static
inline" does the intended behavior in both gcc and clang.

Signed-off-by: Behan Webster <behanw@converseincode.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rts5208: add support for rts5208 and rts5288

There are still many rts5208/5288 card readers being used, but no
drivers are supported them in kernel now. This driver can make a
great convenience for people who use them.

Many other rts-series card reader are supported by mfd driver, but due
to much difference with others, rts5208/5288 can not add into mfd driver
pretty now, so we provide a separated driver here to support the device.

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>