treewide: Convert macro and uses of __section(foo) to __section("foo")

This commit does the same thing as Linux commit 33def8498fdd.

Use a more generic form for __section that requires quotes to avoid
complications with clang and gcc differences.

Remove the quote operator # from compiler_attributes.h __section macro.

Convert all unquoted __section(foo) uses to quoted __section("foo").
Also convert __attribute__((section("foo"))) uses to __section("foo")
even if the __attribute__ has multiple list entry forms.

Signed-off-by: Marek BehĂșn <marek.behun@nic.cz>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/cpu/arm926ejs/spear/spl.c b/arch/arm/cpu/arm926ejs/spear/spl.c
index 08b98a2..b5b9945 100644
--- a/arch/arm/cpu/arm926ejs/spear/spl.c
+++ b/arch/arm/cpu/arm926ejs/spear/spl.c
@@ -22,7 +22,7 @@
  * The BSS cannot be used for this purpose because it will be zeroed after
  * having stored the pointer, so force the location to the data section.
  */
-u32 bootrom_stash_sp __attribute__((section(".data")));
+u32 bootrom_stash_sp __section(".data");
 
 static void ddr_clock_init(void)
 {