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/drivers/serial/serial_pl01x.c b/drivers/serial/serial_pl01x.c
index 4f9de0d..5283d5e 100644
--- a/drivers/serial/serial_pl01x.c
+++ b/drivers/serial/serial_pl01x.c
@@ -30,8 +30,8 @@
 #ifndef CONFIG_DM_SERIAL
 
 static volatile unsigned char *const port[] = CONFIG_PL01x_PORTS;
-static enum pl01x_type pl01x_type __attribute__ ((section(".data")));
-static struct pl01x_regs *base_regs __attribute__ ((section(".data")));
+static enum pl01x_type pl01x_type __section(".data");
+static struct pl01x_regs *base_regs __section(".data");
 #define NUM_PORTS (sizeof(port)/sizeof(port[0]))
 
 #endif